Measurement unit
Measurements
Feet, Metres, Inches, Centimetres, Millimetres
Excavation & Backfill Calculator
Build a pit schedule and estimate excavation, spoil and backfill.
Open this toolExcavated ground, loose spoil and backfill are different quantities. A pit schedule helps keep those stages separate.
Enter rectangular excavation dimensions and the volume assumptions for the work. Add site details such as sloped sides or shoring through a separate measured plan.
Inputs and controls
Permanent occupied volume
Measurements · m³
Allowed range: 0 to 1000000000
Loose spoil factor
Earthwork assumptions
Allowed range: 1 to 3
Delivered fill factor
Earthwork assumptions
Allowed range: 1 to 3
Truck capacity
Earthwork assumptions · cft
Allowed range: 0.1 to 10000
Excavation rate
Work quotes · PKR / m³
Allowed range: 0 to 1000000000
Optional. Enter your own supplier quote.
Delivered fill rate
Work quotes · PKR / cft
Allowed range: 0 to 1000000000
Optional. Enter your own supplier quote.
Reference
Excavation schedule
Length
Excavation schedule
Allowed range: 0.001 to 100000
Width
Excavation schedule
Allowed range: 0.001 to 100000
Depth
Excavation schedule
Allowed range: 0.001 to 100000
Quantity
Excavation schedule
Allowed range: 1 to 10000
How to use
- Choose measurement unit. Enter permanent occupied volume.
- Enter loose spoil factor, delivered fill factor and truck capacity.
- Enter excavation rate and delivered fill rate.
- Add the entries in excavation schedule as separate rows. Include reference, length, width, depth and quantity for each row.
- Select Calculate estimate. Read the returned values alongside the assumptions below before copying, exporting or acting on the result.
Why use this tool
Several pit rows make the earthwork estimate easier to trace when the project includes foundations, trenches and other rectangular cuts.
Before relying on the result
Rectangular excavation volumes only. Sloped sides, shoring and site access are not assessed.
Tool limitations
Rectangular excavation volumes only. Sloped sides, shoring and site access are not assessed.
Questions
Does this assess excavation safety?
No. Ground conditions, shoring, access and safe working methods require site assessment. The calculation is a volume planning aid.
What should I check before using Excavation & Backfill Calculator?
Check Measurement unit, Permanent occupied volume, Loose spoil factor and Delivered fill factor. Use the exact units shown beside the controls and replace any example values with your own inputs.
Source page last modified: 2026-10-01T14:08:57+00:00. This profile describes the tool; use its page to run it.
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