# WhatsOn

> A directory of the active, published Whatson tools. Each profile identifies its public source page, controls and limitations.

## Catalog

* [Readable tool directory](https://whatson.pk/whatson-ai/)
* [Complete JSON catalog](https://whatson.pk/whatson-tools.json)
* [Full Markdown profiles](https://whatson.pk/llms-full.txt)


## Construction

* [Brick Calculator](https://whatson.pk/whatson-ai/tool/construction_brick.md): Count bricks, deduct openings and estimate ordering quantities.
* [Concrete Block Calculator](https://whatson.pk/whatson-ai/tool/construction_block.md): Estimate facing blocks with adjustable block dimensions.
* [Concrete Volume Calculator](https://whatson.pk/whatson-ai/tool/construction_concrete.md): Measure slab, cylinder and strip pours before ordering concrete.
* [Cement & Concrete Mix Calculator](https://whatson.pk/whatson-ai/tool/construction_cement.md): Split a nominal volume mix into cement, sand and crush.
* [Mortar Calculator](https://whatson.pk/whatson-ai/tool/construction_mortar.md): Estimate joint mortar and split cement and sand quantities.
* [Plaster Calculator](https://whatson.pk/whatson-ai/tool/construction_plaster.md): Build a surface schedule and estimate plaster mix materials.
* [Sand Filling Calculator](https://whatson.pk/whatson-ai/tool/construction_sand.md): Estimate sand filling, truck loads and delivered cost.
* [Crush & Gravel Calculator](https://whatson.pk/whatson-ai/tool/construction_gravel.md): Measure an aggregate layer and estimate volume, mass and cost.
* [Tile Calculator](https://whatson.pk/whatson-ai/tool/construction_tile.md): Plan tile quantities, boxes and room coverage.
* [Paint Calculator](https://whatson.pk/whatson-ai/tool/construction_paint.md): Estimate paint for rooms, selected walls and ceilings.
* [Flooring Calculator](https://whatson.pk/whatson-ai/tool/construction_flooring.md): Estimate plank flooring, packs and underlay for multiple rooms.
* [Roof Area Calculator](https://whatson.pk/whatson-ai/tool/construction_roof_area.md): Estimate flat or pitched roof surface from a footprint.
* [Roof Sheet Calculator](https://whatson.pk/whatson-ai/tool/construction_roof_sheet.md): Lay out roofing sheets with overlaps and count purchase sheets.
* [Steel Bar Weight Calculator](https://whatson.pk/whatson-ai/tool/construction_rebar_weight.md): Build a bar schedule with lengths, quantities and weights.
* [Rebar Mesh Quantity Calculator](https://whatson.pk/whatson-ai/tool/construction_rebar_mesh.md): Count specified mesh bars and estimate steel weight.
* [Staircase Calculator](https://whatson.pk/whatson-ai/tool/construction_stairs.md): Compare risers and treads and estimate stair flight quantities.
* [Land Area Calculator](https://whatson.pk/whatson-ai/tool/construction_land_area.md): Measure rectangular, triangular or trapezoidal plot areas.
* [Pakistan Area Converter](https://whatson.pk/whatson-ai/tool/construction_area_converter.md): Convert marla, kanal, square feet and other land area units.
* [Construction Volume Converter](https://whatson.pk/whatson-ai/tool/construction_volume_converter.md): Convert cubic feet, cubic metres, litres and gallons.
* [Excavation & Backfill Calculator](https://whatson.pk/whatson-ai/tool/construction_excavation.md): Build a pit schedule and estimate excavation, spoil and backfill.
* [Water Tank Capacity Calculator](https://whatson.pk/whatson-ai/tool/construction_tank.md): Estimate usable water capacity for three tank shapes.
* [Formwork Area Calculator](https://whatson.pk/whatson-ai/tool/construction_formwork.md): Schedule shuttering for columns, beams and slab soffits.
* [Wall Putty Calculator](https://whatson.pk/whatson-ai/tool/construction_putty.md): Estimate putty mass and bags from product consumption.
* [Waterproofing Calculator](https://whatson.pk/whatson-ai/tool/construction_waterproof.md): Plan coating or membrane quantities from product specifications.
* [Tile Grout Calculator](https://whatson.pk/whatson-ai/tool/construction_grout.md): Estimate joint grout with tile size, joint width and depth.
* [Skirting Calculator](https://whatson.pk/whatson-ai/tool/construction_skirting.md): Measure room perimeters, deduct doors and count skirting pieces.
* [Wallpaper Calculator](https://whatson.pk/whatson-ai/tool/construction_wallpaper.md): Estimate whole drops and rolls with pattern repeats.
* [False Ceiling Calculator](https://whatson.pk/whatson-ai/tool/construction_ceiling.md): Plan ceiling boards or panels and specified grid lengths.
* [Door & Window Area Calculator](https://whatson.pk/whatson-ai/tool/construction_openings.md): Schedule opening areas and frame perimeter lengths.
* [House Construction Cost Calculator](https://whatson.pk/whatson-ai/tool/construction_house_cost.md): Build a floor schedule and compare quoted construction costs.
* [Construction Budget Planner](https://whatson.pk/whatson-ai/tool/construction_budget.md): Build a bill of quantities with labour, taxes and contingency.
* [Paver Calculator](https://whatson.pk/whatson-ai/tool/construction_pavers.md): Estimate paving blocks, bedding sand and edge lengths.

## Cooking & Baking

* [Recipe Scaler](https://whatson.pk/whatson-ai/tool/cooking_recipe_scale.md): Scale an ingredient list to new servings or a direct multiplier.
* [Ingredient Weight Converter](https://whatson.pk/whatson-ai/tool/cooking_ingredient.md): Convert ingredient mass and volume with an explicit cup weight reference.
* [Kitchen Volume Converter](https://whatson.pk/whatson-ai/tool/cooking_volume.md): Convert cups, spoons and liquid units using your chosen utensil sizes.
* [Kitchen Weight Converter](https://whatson.pk/whatson-ai/tool/cooking_weight.md): Convert grams, kilograms, ounces and pounds by weight.
* [Oven Temperature Converter](https://whatson.pk/whatson-ai/tool/cooking_oven.md): Convert Celsius and Fahrenheit and apply an editable fan offset.
* [Cake Pan Converter](https://whatson.pk/whatson-ai/tool/cooking_pan.md): Compare pan areas or batter volumes to find a recipe multiplier.
* [Batter Volume Calculator](https://whatson.pk/whatson-ai/tool/cooking_batter.md): Estimate pan capacity and batter volume from an entered fill level.
* [Dough Hydration Calculator](https://whatson.pk/whatson-ai/tool/cooking_hydration.md): Include starter flour and water in the total dough hydration.
* [Baker’s Percentage Calculator](https://whatson.pk/whatson-ai/tool/cooking_bakers.md): Turn an entered dough schedule into percentages of total flour.
* [Pizza Dough Calculator](https://whatson.pk/whatson-ai/tool/cooking_pizza.md): Find flour and ingredient weights for a target number of dough balls.
* [Bread Dough Batch Calculator](https://whatson.pk/whatson-ai/tool/cooking_bread.md): Build a dough ingredient schedule for weighed loaves before baking.
* [Roti Dough Calculator](https://whatson.pk/whatson-ai/tool/cooking_roti.md): Plan atta and water for weighed roti dough portions.
* [Naan Dough Calculator](https://whatson.pk/whatson-ai/tool/cooking_naan.md): Scale an entered naan formula by total dough ball mass.
* [Sourdough Starter Feeding Calculator](https://whatson.pk/whatson-ai/tool/cooking_starter.md): Calculate feed amounts from retained starter and feeding ratios.
* [Sourdough Recipe Calculator](https://whatson.pk/whatson-ai/tool/cooking_sourdough.md): Split total flour and water between a starter and the final mix.
* [Preferment Calculator](https://whatson.pk/whatson-ai/tool/cooking_preferment.md): Divide an entered flour and water formula into preferment and final mix.
* [Dough Portion Calculator](https://whatson.pk/whatson-ai/tool/cooking_portions.md): Divide available dough by desired count or target ball weight.
* [Rice Portion Calculator](https://whatson.pk/whatson-ai/tool/cooking_rice.md): Plan dry rice and compare an entered cooked yield and water ratio.
* [Daal Portion Calculator](https://whatson.pk/whatson-ai/tool/cooking_daal.md): Plan dry lentils and water from your preferred per person quantities.
* [Biryani Batch Planner](https://whatson.pk/whatson-ai/tool/cooking_biryani.md): Build an ingredient purchase list from editable per person quantities.
* [Chai Batch Calculator](https://whatson.pk/whatson-ai/tool/cooking_tea.md): Plan milk, water, tea and sugar for your chosen serving cup.
* [Spice Mix Scaler](https://whatson.pk/whatson-ai/tool/cooking_spice.md): Scale your spice blend to a target total mass while keeping its proportions.
* [Egg Portion Converter](https://whatson.pk/whatson-ai/tool/cooking_egg.md): Convert edible egg quantities to grams for partial recipe portions.
* [Butter and Oil Fat Equivalent](https://whatson.pk/whatson-ai/tool/cooking_fat.md): Compare masses by entered fat content and show the nonfat difference.
* [Chocolate Blend Calculator](https://whatson.pk/whatson-ai/tool/cooking_chocolate.md): Blend two labelled cocoa percentages to a target weighted percentage.
* [Ganache Ratio Calculator](https://whatson.pk/whatson-ai/tool/cooking_ganache.md): Split a target batch into chocolate and cream using your own ratio.
* [Sugar Syrup Ratio Calculator](https://whatson.pk/whatson-ai/tool/cooking_syrup.md): Plan sugar and water masses for an entered sugar fraction.
* [Recipe Cost Calculator](https://whatson.pk/whatson-ai/tool/cooking_cost.md): Cost ingredient usage and distinguish it from buying whole packs.
* [Bakery Pricing Calculator](https://whatson.pk/whatson-ai/tool/cooking_pricing.md): Calculate a price from entered batch costs, saleable yield and margin.
* [Cooking Yield Calculator](https://whatson.pk/whatson-ai/tool/cooking_yield.md): Compare measured raw and cooked masses and scale a target cooked amount.
* [Recipe Shopping List Planner](https://whatson.pk/whatson-ai/tool/cooking_shopping.md): Subtract pantry stock and round the remaining purchase to whole packs.
* [Muffin and Cupcake Batch Calculator](https://whatson.pk/whatson-ai/tool/cooking_cupcake.md): Work out full portions, tray rounds and leftover weighed batter.

## Seller Pricing & Profit

* [Profit Margin Calculator](https://whatson.pk/whatson-ai/tool/seller_margin.md): Separate the share of sales kept as profit from the markup on entered cost.
* [Markup Calculator](https://whatson.pk/whatson-ai/tool/seller_markup.md): Build a price from cost and markup, then read the resulting margin.
* [Target Selling Price Calculator](https://whatson.pk/whatson-ai/tool/seller_price.md): Solve a price after per order costs, sales based fees and a target margin.
* [Discount Price & Profit Calculator](https://whatson.pk/whatson-ai/tool/seller_discount.md): Compare the original price with a percent or fixed coupon after entered costs.
* [Marketplace Fee Calculator](https://whatson.pk/whatson-ai/tool/seller_fees.md): Build a fee schedule with different receipt bases and fixed amounts.
* [Daraz Order Profit Calculator](https://whatson.pk/whatson-ai/tool/seller_daraz.md): Model entered Daraz fees, credited receipts and the difference between profit and cash settlement.
* [COD Order Profit Calculator](https://whatson.pk/whatson-ai/tool/seller_cod.md): Check a delivered cash on delivery order, collection charges and the payout deduction.
* [Payment Gateway Fee Calculator](https://whatson.pk/whatson-ai/tool/seller_payment.md): Calculate fee deductions from a charge or solve the charge needed for a target payout.
* [Courier Volumetric Weight & Quote Calculator](https://whatson.pk/whatson-ai/tool/seller_courier.md): Compare actual and volumetric weight, then apply your entered billing steps and surcharges.
* [Shipping Charge & Subsidy Calculator](https://whatson.pk/whatson-ai/tool/seller_shipping.md): See what delivery collections cover after fees and solve a charge that covers the courier quote.
* [COD RTO Expected Profit Calculator](https://whatson.pk/whatson-ai/tool/seller_rto.md): Combine a delivered order profit with the loss on failed dispatches.
* [Refund & Return Loss Calculator](https://whatson.pk/whatson-ai/tool/seller_returns.md): Account for retained receipts, refunded fees and recovered stock without losing the return costs.
* [ROAS & Ad Contribution Calculator](https://whatson.pk/whatson-ai/tool/seller_roas.md): Read ad revenue, included non ad costs and the spend available before contribution reaches zero.
* [Maximum CPA Calculator](https://whatson.pk/whatson-ai/tool/seller_cpa.md): Find the ad cost headroom per sale after included costs and your target contribution.
* [Break Even Sales Calculator](https://whatson.pk/whatson-ai/tool/seller_breakeven.md): Cover an entered fixed cost using contribution after per unit cost and percentage fees.
* [Target Profit Sales Calculator](https://whatson.pk/whatson-ai/tool/seller_targetunits.md): Solve complete sale units needed to cover fixed costs and reach a chosen period profit.
* [Landed Cost per Usable Unit Calculator](https://whatson.pk/whatson-ai/tool/seller_landed.md): Allocate purchase, exchange conversion and batch charges across usable units.
* [Bulk Purchase Discount Calculator](https://whatson.pk/whatson-ai/tool/seller_bulk.md): Compare a quoted unit discount with total cash purchase and cost per usable unit.
* [Wholesale Quote Calculator](https://whatson.pk/whatson-ai/tool/seller_wholesale.md): Spread fixed order costs across quantity while checking MOQ and a target margin.
* [Bundle Price & Profit Calculator](https://whatson.pk/whatson-ai/tool/seller_bundle.md): Compare a bundle discount with the combined cost of all included products.
* [BOGO & Multi Buy Profit Calculator](https://whatson.pk/whatson-ai/tool/seller_bogo.md): Count every supplied unit while only charging for the paid units in an offer group.
* [Maximum Coupon Calculator](https://whatson.pk/whatson-ai/tool/seller_coupon.md): Find the discount room remaining after costs, sales fees and a target profit.
* [Entered Tax Price Split Calculator](https://whatson.pk/whatson-ai/tool/seller_tax.md): Split an inclusive amount or add an entered percentage to an exclusive amount.
* [Seller Settlement Reconciliation Calculator](https://whatson.pk/whatson-ai/tool/seller_settlement.md): Separate selling deductions, withholding and reserves while comparing an actual payout.
* [Inventory Turnover & Days Calculator](https://whatson.pk/whatson-ai/tool/seller_inventory.md): Relate period cost of goods sold to average inventory at cost.
* [Reorder Point & Quantity Calculator](https://whatson.pk/whatson-ai/tool/seller_reorder.md): Use lead time demand, safety stock and stock already on order in a constant demand plan.
* [Stock Runway Calculator](https://whatson.pk/whatson-ai/tool/seller_stock.md): Measure unreserved stock against average daily demand and a supplier wait.
* [Inventory Cash Gap Calculator](https://whatson.pk/whatson-ai/tool/seller_cashgap.md): Map purchase lead time, stock holding, settlement delay and supplier credit to a funding estimate.
* [Sales Channel Profit Comparison](https://whatson.pk/whatson-ai/tool/seller_comparison.md): Compare entered prices and charges while keeping product and packaging costs common.
* [SKU Profit Batch Calculator](https://whatson.pk/whatson-ai/tool/seller_catalog.md): Add SKU profits using quantities and revenue weights rather than averaging margin percentages.
* [Sales & Profit Scenario Planner](https://whatson.pk/whatson-ai/tool/seller_forecast.md): Turn traffic and three conversion assumptions into order revenue and contribution forecasts.
* [Currency Quote Cost Calculator](https://whatson.pk/whatson-ai/tool/seller_fx.md): Convert a source amount with an entered PKR quote and percentage or fixed exchange charges.

## Solar & Battery

* [Home Energy Load Planner](https://whatson.pk/whatson-ai/tool/solar_load.md): Build an appliance schedule and separate daily energy from connected running power.
* [Essential Backup Load Planner](https://whatson.pk/whatson-ai/tool/solar_backup_load.md): Choose outage hours for essential appliances and calculate an AC energy budget.
* [Solar Array Size Calculator](https://whatson.pk/whatson-ai/tool/solar_solar_size.md): Estimate DC capacity from a daily AC energy target and entered sun hours.
* [Solar Panel Quantity Calculator](https://whatson.pk/whatson-ai/tool/solar_panel_count.md): Round a target array up to whole panels and inspect the resulting DC capacity.
* [Solar Generation Estimator](https://whatson.pk/whatson-ai/tool/solar_generation.md): Estimate AC energy after separate DC losses and inverter efficiency.
* [Monthly Solar Yield Planner](https://whatson.pk/whatson-ai/tool/solar_monthly.md): Supply your own monthly sun hours and day counts for a seasonal production worksheet.
* [Battery Backup Runtime Calculator](https://whatson.pk/whatson-ai/tool/solar_runtime.md): Estimate steady AC backup hours from battery energy and an entered load.
* [Required Battery Capacity Calculator](https://whatson.pk/whatson-ai/tool/solar_battery_size.md): Work backwards from a backup load and duration to nominal battery capacity.
* [Battery Bank Series and Parallel Calculator](https://whatson.pk/whatson-ai/tool/solar_bank.md): Inspect ideal bank voltage, amp hours and energy from identical battery modules.
* [Usable Battery Energy Calculator](https://whatson.pk/whatson-ai/tool/solar_usable.md): Separate nominal stored energy, usable DC energy and estimated AC output.
* [Battery Charging Time Estimator](https://whatson.pk/whatson-ai/tool/solar_charge_time.md): Estimate ideal bulk equivalent charging time from a state of charge change.
* [Charge Current and C Rate Calculator](https://whatson.pk/whatson-ai/tool/solar_charge_current.md): Compare entered charge current with capacity and a manufacturer supplied current limit.
* [Inverter Running Load Sizing Worksheet](https://whatson.pk/whatson-ai/tool/solar_inverter.md): Compare simultaneous running loads with an entered headroom allowance.
* [Watts, VA and Power Factor Converter](https://whatson.pk/whatson-ai/tool/solar_va.md): Convert real and apparent single phase power using the entered power factor.
* [Motor Starting Load Worksheet](https://whatson.pk/whatson-ai/tool/solar_surge.md): Combine one starting appliance with other loads already running.
* [MPPT Output Current Worksheet](https://whatson.pk/whatson-ai/tool/solar_controller.md): Estimate battery side controller current from an array power allowance.
* [PV String Limit Checker](https://whatson.pk/whatson-ai/tool/solar_string.md): Compare a proposed series string against entered cold Voc and hot Vmp limits.
* [PV Series and Parallel Array Calculator](https://whatson.pk/whatson-ai/tool/solar_array.md): Calculate ideal voltage, current and nameplate power for identical modules.
* [Cold Temperature Voc Calculator](https://whatson.pk/whatson-ai/tool/solar_cold_voc.md): Apply a signed module voltage coefficient to a colder module temperature.
* [Hot Temperature Vmp Calculator](https://whatson.pk/whatson-ai/tool/solar_hot_vmp.md): Inspect the operating voltage reduction under an entered hot cell condition.
* [DC Cable Voltage Drop Calculator](https://whatson.pk/whatson-ai/tool/solar_voltage_drop.md): Estimate resistive DC drop in a two conductor circuit from an entered conductor area.
* [Solar Loss Chain Calculator](https://whatson.pk/whatson-ai/tool/solar_efficiency.md): Multiply successive loss factors and see how each stage changes energy.
* [Roof Panel Footprint Planner](https://whatson.pk/whatson-ai/tool/solar_roof.md): Fit modules into an entered rectangular usable area in two orientations.
* [Tilted Panel Row Spacing Calculator](https://whatson.pk/whatson-ai/tool/solar_row_spacing.md): Calculate simple geometric shadow clearance for an entered solar elevation angle.
* [Battery Energy Unit Converter](https://whatson.pk/whatson-ai/tool/solar_energy_convert.md): Convert between voltage and Ah, Wh, kWh and electricity units.
* [Battery Option Comparison Worksheet](https://whatson.pk/whatson-ai/tool/solar_battery_compare.md): Compare entered purchase costs per usable cycle and throughput energy.
* [Solar Installation Quote Builder](https://whatson.pk/whatson-ai/tool/solar_quote.md): Total a manually priced bill of materials in PKR without fetching market rates.
* [Solar Self Consumption and Export Savings Calculator](https://whatson.pk/whatson-ai/tool/solar_savings.md): Value entered solar use and exports without assuming a current utility tariff.
* [Solar Simple Payback Calculator](https://whatson.pk/whatson-ai/tool/solar_payback.md): Compare an entered capital outlay with annual net savings.
* [Solar Lifetime Cashflow Worksheet](https://whatson.pk/whatson-ai/tool/solar_lifecycle.md): Model annual savings, degradation, maintenance and a one time replacement.
* [Solar Output Degradation Planner](https://whatson.pk/whatson-ai/tool/solar_degradation.md): Track an entered first year yield under a constant annual reduction.
* [Off Grid Energy and Storage Balance](https://whatson.pk/whatson-ai/tool/solar_offgrid.md): Estimate array and nominal storage for a daily AC demand and autonomy allowance.

## Gardening

* [Raised Bed Soil Calculator](https://whatson.pk/whatson-ai/tool/gardening_bed_soil.md): Work out fill litres, whole bags and PKR cost for one or more beds.
* [Pot Volume Calculator](https://whatson.pk/whatson-ai/tool/gardening_pot_volume.md): Compare cylindrical, tapered round and rectangular containers.
* [Potting Mix Ratio Calculator](https://whatson.pk/whatson-ai/tool/gardening_pot_mix.md): Split any volume into your chosen ingredient parts and bag sizes.
* [Mulch Quantity Calculator](https://whatson.pk/whatson-ai/tool/gardening_mulch.md): Convert uncovered ground and layer depth to loose volume and bags.
* [Compost Top Dressing Calculator](https://whatson.pk/whatson-ai/tool/gardening_compost_spread.md): Plan a measured compost layer and delivery weight.
* [Plant Spacing Calculator](https://whatson.pk/whatson-ai/tool/gardening_plant_spacing.md): Count centre points in a rectangle with explicit margins and compare orientations.
* [Garden Bed Layout Planner](https://whatson.pk/whatson-ai/tool/gardening_bed_layout.md): Fit accessible parallel beds and internal paths in a garden rectangle.
* [Seed Quantity Calculator](https://whatson.pk/whatson-ai/tool/gardening_seed_quantity.md): Allow for expected germination, establishment and spare seeds.
* [Seed Tray Planner](https://whatson.pk/whatson-ai/tool/gardening_seed_trays.md): Allocate whole trays, cells and seed starting medium.
* [Seed Germination Test Calculator](https://whatson.pk/whatson-ai/tool/gardening_germination.md): Measure a seed lot test and convert the observed rate to a planning count.
* [Seedling Thinning Calculator](https://whatson.pk/whatson-ai/tool/gardening_thinning.md): Count spaced plants along a row after leaving clear ends.
* [Lawn Seed Calculator](https://whatson.pk/whatson-ai/tool/gardening_lawn_seed.md): Use the supplier rate for new lawn or overseeding and price whole packs.
* [Turf Roll Calculator](https://whatson.pk/whatson-ai/tool/gardening_sod.md): Plan whole rolls, cutting allowance and installed material cost.
* [Crop Water Budget Calculator](https://whatson.pk/whatson-ai/tool/gardening_water_need.md): Convert entered ETo, crop factor, effective rain and irrigation efficiency to litres.
* [Drip Irrigation Runtime Calculator](https://whatson.pk/whatson-ai/tool/gardening_drip_runtime.md): Match a session volume to emitters, measured flow and application efficiency.
* [Drip Zone Flow Calculator](https://whatson.pk/whatson-ai/tool/gardening_drip_flow.md): Total operating emitters across several lines and compare a measured supply.
* [Garden Water Tank Calculator](https://whatson.pk/whatson-ai/tool/gardening_tank_days.md): Estimate usable storage, daily consumption and refill interval.
* [Rainwater Harvest Calculator](https://whatson.pk/whatson-ai/tool/gardening_rain_harvest.md): Estimate collected rain volume, first flush loss and remaining tank space.
* [Sprinkler Catch Can Calculator](https://whatson.pk/whatson-ai/tool/gardening_sprinkler.md): Measure application rate and low quarter distribution uniformity.
* [Soil Water Storage Calculator](https://whatson.pk/whatson-ai/tool/gardening_soil_water.md): Estimate root zone available water and refill volume from soil measurements.
* [Fertilizer Label Rate Calculator](https://whatson.pk/whatson-ai/tool/gardening_fertilizer.md): Scale a label application rate to garden area and whole packages.
* [NPK Nutrient Content Calculator](https://whatson.pk/whatson-ai/tool/gardening_npk.md): Read N, P₂O₅ and K₂O amounts from a fertilizer label.
* [Nutrient Solution PPM Calculator](https://whatson.pk/whatson-ai/tool/gardening_nutrient_solution.md): Calculate soluble product mass for one entered nutrient target.
* [Liquid Feed Dilution Calculator](https://whatson.pk/whatson-ai/tool/gardening_dilution.md): Scale a product label rate to a final prepared volume.
* [Fertilizer Injector Stock Calculator](https://whatson.pk/whatson-ai/tool/gardening_fertigation.md): Scale a final nutrient target to stock tank concentration and draw volume.
* [Sowing and Harvest Date Planner](https://whatson.pk/whatson-ai/tool/gardening_harvest_calendar.md): Build a date sequence using your seed packet and local growing durations.
* [Succession Sowing Planner](https://whatson.pk/whatson-ai/tool/gardening_succession.md): Schedule repeated batches and identify gaps between entered harvest windows.
* [Garden Harvest Yield Calculator](https://whatson.pk/whatson-ai/tool/gardening_yield.md): Combine crop areas, entered yield rates and unusable harvest losses.
* [Kitchen Garden Savings Calculator](https://whatson.pk/whatson-ai/tool/gardening_savings.md): Value only the usable produce that replaces your shopping.
* [Garden Setup Budget Calculator](https://whatson.pk/whatson-ai/tool/gardening_budget.md): Build a PKR bill of materials with labour, delivery and contingency.
* [Trellis Materials Calculator](https://whatson.pk/whatson-ai/tool/gardening_trellis.md): Count posts, end supports and horizontal wire for a straight row.
* [Pakistan Garden Area Converter](https://whatson.pk/whatson-ai/tool/gardening_area_convert.md): Convert square metres, square feet, marla and kanal with an explicit local marla definition.

## Student & Education

* [Marks Percentage](https://whatson.pk/whatson-ai/tool/education_marks_percentage.md): Turn obtained marks into a percentage and a target gap.
* [Subject Marks Total](https://whatson.pk/whatson-ai/tool/education_subject_total.md): Combine unequal subject totals without averaging their percentages.
* [Weighted Course Grade](https://whatson.pk/whatson-ai/tool/education_weighted_grade.md): Balance quizzes, assignments, practicals and exams by their actual weights.
* [Final Exam Marks Needed](https://whatson.pk/whatson-ai/tool/education_final_exam.md): Find the whole exam mark needed to reach your course target.
* [Semester GPA](https://whatson.pk/whatson-ai/tool/education_semester_gpa.md): Enter the grade point and counted credits for each course.
* [Cumulative GPA](https://whatson.pk/whatson-ai/tool/education_cgpa.md): Combine semesters using their counted credits, not an equal average.
* [Target CGPA Planner](https://whatson.pk/whatson-ai/tool/education_target_cgpa.md): See the average grade point needed across your remaining credits.
* [Repeated Course CGPA](https://whatson.pk/whatson-ai/tool/education_repeat_course.md): Compare replacement and both attempts counted using a declared policy.
* [Custom Grade Boundaries](https://whatson.pk/whatson-ai/tool/education_grade_boundary.md): Match your marks to the grade thresholds you enter.
* [Admission Merit Aggregate](https://whatson.pk/whatson-ai/tool/education_merit_aggregate.md): Combine SSC, HSSC and test marks with your programme weights.
* [Entry Test Target](https://whatson.pk/whatson-ai/tool/education_entry_target.md): Work backwards from your chosen aggregate to a whole test mark.
* [Negative Marking Score](https://whatson.pk/whatson-ai/tool/education_negative_marking.md): Calculate net marks, unanswered questions and attempted accuracy.
* [Correct Answers Needed](https://whatson.pk/whatson-ai/tool/education_test_attempts.md): Find the minimum correct answers within a fixed attempted count.
* [Exam Time Per Question](https://whatson.pk/whatson-ai/tool/education_exam_pacing.md): Reserve review time and allocate the remaining paper time by section.
* [Attendance Percentage](https://whatson.pk/whatson-ai/tool/education_attendance.md): Check attended classes against an editable attendance requirement.
* [Attendance Recovery](https://whatson.pk/whatson-ai/tool/education_attendance_recovery.md): Find consecutive classes to attend to recover your attendance.
* [Future Absence Allowance](https://whatson.pk/whatson-ai/tool/education_absence_allowance.md): See how many remaining classes can be missed at a chosen final threshold.
* [Subject Attendance Forecast](https://whatson.pk/whatson-ai/tool/education_attendance_forecast.md): Forecast final attendance separately for each course.
* [Weekly Study Allocation](https://whatson.pk/whatson-ai/tool/education_study_allocation.md): Divide your available study time using subject priority weights.
* [Revision Calendar](https://whatson.pk/whatson-ai/tool/education_revision_calendar.md): Build dated study sessions with rest days and optional repeat passes.
* [Reading Time Planner](https://whatson.pk/whatson-ai/tool/education_reading_time.md): Estimate reading time from pages, word density and your measured pace.
* [Study Session Planner](https://whatson.pk/whatson-ai/tool/education_pomodoro.md): Plan focus blocks and short or long breaks without a running timer.
* [Exam Study Countdown](https://whatson.pk/whatson-ai/tool/education_exam_countdown.md): Count preparation days and study hours before an entered exam date.
* [Assignment Work Planner](https://whatson.pk/whatson-ai/tool/education_assignment_plan.md): Split an assignment into tasks and see the daily workload before its deadline.
* [Semester Fee Calculator](https://whatson.pk/whatson-ai/tool/education_semester_fee.md): Combine credit charges and fixed dues, with discounts on tuition only.
* [Scholarship Fee Balance](https://whatson.pk/whatson-ai/tool/education_scholarship.md): Apply an award to eligible tuition and show remaining education dues.
* [Fee Installment Split](https://whatson.pk/whatson-ai/tool/education_fee_installments.md): Distribute a fee balance across whole rupee installments.
* [Degree Cost Projection](https://whatson.pk/whatson-ai/tool/education_degree_cost.md): Project semester costs with an editable rise per semester.
* [Hostel Student Budget](https://whatson.pk/whatson-ai/tool/education_hostel_budget.md): Add living expenses, moving in costs and refundable cash deposits.
* [Student Commute Cost](https://whatson.pk/whatson-ai/tool/education_commute_cost.md): Compare public transport with a vehicle using entered fares and fuel prices.
* [Printing and Binding Cost](https://whatson.pk/whatson-ai/tool/education_printing_cost.md): Price printed sheets separately from printed sides and binding.
* [Education Savings Goal](https://whatson.pk/whatson-ai/tool/education_savings_goal.md): Plan monthly saving for a fee or equipment target without investment returns.

## Developer & Data

* [JSON Formatter & Validator](https://whatson.pk/whatson-ai/tool/developer_json_format.md): Validate, format or compact JSON without rounding its number tokens.
* [JSON Pointer Explorer](https://whatson.pk/whatson-ai/tool/developer_json_pointer.md): Read a nested value using an RFC 6901 pointer and inspect its children.
* [JSON Structure Diff](https://whatson.pk/whatson-ai/tool/developer_json_diff.md): Compare JSON nodes by type, value and path, ignoring object key order.
* [JSON to CSV](https://whatson.pk/whatson-ai/tool/developer_json_csv.md): Turn a list of flat JSON objects into a quoted CSV dataset.
* [CSV to JSON](https://whatson.pk/whatson-ai/tool/developer_csv_json.md): Convert a header based CSV into JSON while preserving every cell as text.
* [CSV Cleaner & Deduplicator](https://whatson.pk/whatson-ai/tool/developer_csv_clean.md): Trim cells, remove duplicate records and reserialize quoted CSV.
* [CSV Column Selector](https://whatson.pk/whatson-ai/tool/developer_csv_columns.md): Select named columns in your chosen order without losing cell values.
* [CSV Dataset Merger](https://whatson.pk/whatson-ai/tool/developer_csv_merge.md): Append two CSV datasets with exactly matching header order.
* [CSV Numeric Column Statistics](https://whatson.pk/whatson-ai/tool/developer_csv_stats.md): Summarise an explicitly selected numeric column and report blank values.
* [Line by Line Text Diff](https://whatson.pk/whatson-ai/tool/developer_text_diff.md): Compare two texts with an exact line sequence and show additions and removals.
* [Duplicate Line Remover](https://whatson.pk/whatson-ai/tool/developer_text_dedupe.md): Keep the first occurrence of each line with optional case and whitespace rules.
* [Text Line Sorter](https://whatson.pk/whatson-ai/tool/developer_text_sort.md): Sort lines naturally, lexically or by numeric values.
* [Unicode Text Counter](https://whatson.pk/whatson-ai/tool/developer_text_stats.md): Count UTF8 characters, words, lines and whitespace in English or Urdu text.
* [Text Case Converter](https://whatson.pk/whatson-ai/tool/developer_text_case.md): Apply Unicode case conversion where the installed PHP mbstring supports it.
* [Base64 Encoder & Decoder](https://whatson.pk/whatson-ai/tool/developer_base64.md): Encode UTF8 text, decode strict Base64 and inspect binary results as hex.
* [URL Component Encoder & Decoder](https://whatson.pk/whatson-ai/tool/developer_url_codec.md): Encode a URL component or decode percent escapes without fetching a URL.
* [URL Component Inspector](https://whatson.pk/whatson-ai/tool/developer_url_parse.md): Inspect a URL and its ordered query pairs, preserving duplicate keys.
* [Query String Builder](https://whatson.pk/whatson-ai/tool/developer_query_builder.md): Create an encoded query from an ordered CSV of key and value pairs.
* [HTML Entity Encoder & Decoder](https://whatson.pk/whatson-ai/tool/developer_html_entities.md): Escape HTML characters or decode HTML5 entities into plain displayed text.
* [HTML to Plain Text](https://whatson.pk/whatson-ai/tool/developer_html_text.md): Extract text from pasted HTML with block spacing and script content removed.
* [Text Hash Generator](https://whatson.pk/whatson-ai/tool/developer_hash.md): Calculate checksum digests for the exact UTF8 bytes you enter.
* [HMAC Signature Generator](https://whatson.pk/whatson-ai/tool/developer_hmac.md): Create a keyed SHA256 or SHA512 HMAC from an exact message.
* [UUID Version 4 Generator](https://whatson.pk/whatson-ai/tool/developer_uuid.md): Generate independent UUIDs with PHP cryptographic randomness.
* [Unix Timestamp Converter](https://whatson.pk/whatson-ai/tool/developer_timestamp.md): Convert exact whole seconds or milliseconds and inspect UTC and Pakistan time.
* [Timezone Date Converter](https://whatson.pk/whatson-ai/tool/developer_timezone.md): Convert an explicitly entered wall clock time and flag DST ambiguity.
* [Exact Number Base Converter](https://whatson.pk/whatson-ai/tool/developer_number_base.md): Convert signed integer strings across bases 2 to 36 without float rounding.
* [Data Size Unit Converter](https://whatson.pk/whatson-ai/tool/developer_bytes.md): Compare decimal byte units with binary byte units.
* [HEX RGB HSL Color Converter](https://whatson.pk/whatson-ai/tool/developer_color.md): Convert a six or three digit HEX color, RGB channels or HSL values.
* [Regular Expression Tester](https://whatson.pk/whatson-ai/tool/developer_regex.md): Inspect bounded PCRE matches and capture groups on a UTF8 text sample.
* [JWT Decoder, Unverified](https://whatson.pk/whatson-ai/tool/developer_jwt.md): Read JWT header and payload without verifying the signature or trusting claims.
* [CSV to SQL INSERT Builder](https://whatson.pk/whatson-ai/tool/developer_sql_insert.md): Generate quoted INSERT statements for review without executing SQL.
* [IPv4 CIDR Subnet Calculator](https://whatson.pk/whatson-ai/tool/developer_ipv4_subnet.md): Show network, mask, address range and conventional host capacity.

## Image Preparation

* [Image Resizer](https://whatson.pk/whatson-ai/tool/image_resize.md): Set exact pixel dimensions, or lock the original ratio.
* [Percentage Image Resizer](https://whatson.pk/whatson-ai/tool/image_resize_percent.md): Scale each image by a percentage of its original dimensions.
* [Fit Image Inside Box](https://whatson.pk/whatson-ai/tool/image_fit.md): Keep the whole image within a maximum width and height.
* [Image Cover Crop](https://whatson.pk/whatson-ai/tool/image_fill.md): Fill exact dimensions by cropping from the chosen anchor.
* [Coordinate Image Cropper](https://whatson.pk/whatson-ai/tool/image_crop.md): Enter the top left coordinate and the size of the rectangle.
* [Aspect Ratio Cropper](https://whatson.pk/whatson-ai/tool/image_aspect_crop.md): Keep the largest crop matching the ratio you choose.
* [Image Rotator](https://whatson.pk/whatson-ai/tool/image_rotate.md): Rotate clockwise, keeping the full expanded canvas.
* [Image Flip Tool](https://whatson.pk/whatson-ai/tool/image_flip.md): Mirror horizontally, vertically or in both directions.
* [Image Canvas Padding](https://whatson.pk/whatson-ai/tool/image_pad.md): Add equal canvas space around the original image.
* [Image Border Tool](https://whatson.pk/whatson-ai/tool/image_border.md): Draw a border inside the image without changing dimensions.
* [Rounded Image Corners](https://whatson.pk/whatson-ai/tool/image_rounded.md): Cut the corners to transparency and download PNG.
* [Circular Profile Image](https://whatson.pk/whatson-ai/tool/image_circle.md): Crop the centre square and mask it to a transparent circle.
* [Image Format Converter](https://whatson.pk/whatson-ai/tool/image_convert.md): Choose PNG, JPEG or WebP and control the output quality.
* [Convert Image to JPEG](https://whatson.pk/whatson-ai/tool/image_jpeg.md): Reencode a static image as JPEG. Host codec support is checked.
* [Convert Image to PNG](https://whatson.pk/whatson-ai/tool/image_png.md): Reencode a static image as PNG. Host codec support is checked.
* [Convert Image to WebP](https://whatson.pk/whatson-ai/tool/image_webp.md): Reencode a static image as WebP. Host codec support is checked.
* [Convert Image to AVIF](https://whatson.pk/whatson-ai/tool/image_avif.md): Reencode a static image as AVIF. Host codec support is checked.
* [Image Compressor](https://whatson.pk/whatson-ai/tool/image_compress.md): Encode JPEG or WebP with a chosen quality level.
* [Target File Size Compressor](https://whatson.pk/whatson-ai/tool/image_target_size.md): Find a JPEG quality that fits your byte target, without resizing.
* [Image Brightness](https://whatson.pk/whatson-ai/tool/image_brightness.md): Lighten or darken the image.
* [Image Contrast](https://whatson.pk/whatson-ai/tool/image_contrast.md): Adjust contrast using the PHP GD contrast filter.
* [Gaussian Image Blur](https://whatson.pk/whatson-ai/tool/image_blur.md): Apply a bounded number of Gaussian blur passes.
* [Image Sharpening](https://whatson.pk/whatson-ai/tool/image_sharpen.md): Apply a standard sharpening convolution.
* [Image Pixelation](https://whatson.pk/whatson-ai/tool/image_pixelate.md): Turn detail into blocks of averaged colour.
* [Black and White Threshold](https://whatson.pk/whatson-ai/tool/image_threshold.md): Turn each pixel into black or white using luminance.
* [Image Opacity](https://whatson.pk/whatson-ai/tool/image_opacity.md): Reduce existing opacity and preserve PNG transparency.
* [Grayscale Image](https://whatson.pk/whatson-ai/tool/image_grayscale.md): Remove colour while retaining luminance.
* [Sepia Image](https://whatson.pk/whatson-ai/tool/image_sepia.md): Apply a warm sepia colour transform.
* [Invert Image Colours](https://whatson.pk/whatson-ai/tool/image_invert.md): Reverse red, green and blue channels.
* [Duotone Image](https://whatson.pk/whatson-ai/tool/image_duotone.md): Map luminance between two selected colours.
* [Image Colour Tint](https://whatson.pk/whatson-ai/tool/image_tint.md): Blend a selected colour over the image.
* [Text Watermark](https://whatson.pk/whatson-ai/tool/image_text_watermark.md): Draw a text label with a bundled Unicode font. Urdu shaping is not provided.
* [Logo Watermark](https://whatson.pk/whatson-ai/tool/image_logo_watermark.md): Overlay the second image as a proportional logo.
* [Image Grid Collage](https://whatson.pk/whatson-ai/tool/image_collage.md): Combine up to six images into equal cropped grid cells.
* [Photo Contact Sheet](https://whatson.pk/whatson-ai/tool/image_contact_sheet.md): Fit whole images in labelled preview cells.
* [Image Grid Splitter](https://whatson.pk/whatson-ai/tool/image_split.md): Split a picture into exact covering tiles, including edge pixels.
* [Image Comparison](https://whatson.pk/whatson-ai/tool/image_compare.md): Place two complete images side by side on one canvas.
* [Social Image Preparation](https://whatson.pk/whatson-ai/tool/image_social.md): Fit or crop to common publishing dimensions, with editable presets.
* [Pakistan Passport Photo Layout](https://whatson.pk/whatson-ai/tool/image_passport.md): Prepare a 35 x 45 mm photo canvas at your chosen DPI. Crop only, no biometric approval.
* [Signature Image Preparation](https://whatson.pk/whatson-ai/tool/image_signature.md): Fit a signature to an application box, with optional near white transparency.
* [Favicon Size Pack](https://whatson.pk/whatson-ai/tool/image_favicon.md): Generate PNG icons and a 32 pixel ICO from your image.
* [Website Thumbnail Maker](https://whatson.pk/whatson-ai/tool/image_thumbnail.md): Generate three editable width variants at the original aspect ratio.
* [Print Photo Size Tool](https://whatson.pk/whatson-ai/tool/image_print_photo.md): Convert millimetres and DPI to exact output pixels.
* [Image Information Inspector](https://whatson.pk/whatson-ai/tool/image_inspect.md): Read decoded dimensions, file size, format and alpha presence.
* [Image Colour Palette](https://whatson.pk/whatson-ai/tool/image_palette.md): Count quantised visible colours from a bounded sample.
* [Image RGB Histogram](https://whatson.pk/whatson-ai/tool/image_histogram.md): Measure 16 bins per channel from a bounded sample.
* [Image Pixel Colour Picker](https://whatson.pk/whatson-ai/tool/image_pixel_picker.md): Read the RGBA value at an exact source coordinate.
* [Image to Base64](https://whatson.pk/whatson-ai/tool/image_base64.md): Generate a data URI for a metadata stripped PNG reencode.
* [Image Metadata Remover](https://whatson.pk/whatson-ai/tool/image_strip_metadata.md): Reencode pixels without original EXIF or embedded comments. Colour profiles are also removed.
* [Blank Image Canvas](https://whatson.pk/whatson-ai/tool/image_blank_canvas.md): Create an image with a selected colour and dimensions.