# Door & Window Area Calculator

Schedule opening areas and frame perimeter lengths.

[Open this tool](https://whatson.pk/openings-calculator/)

Category: Construction

A door frame usually has two jambs and a head, while a window frame follows all four sides.

List each opening with its dimensions and quantity. Compare the area schedule with the frame perimeter before asking for a joinery or glazing quote.

## Inputs and controls

* Measurement unit: Feet; Metres; Inches; Centimetres; Millimetres
* Area rate (PKR / sq ft). Allowed range: 0 to 1000000000. Optional. Enter your own supplier quote.
* Reference
* Type: Door; Window
* Width. Allowed range: 0.001 to 100000
* Height. Allowed range: 0.001 to 100000
* Quantity. Allowed range: 1 to 1000

## How to use

* Choose measurement unit. Enter area rate.

* Add the entries in door and window schedule as separate rows. Include reference, type, width, height 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

Different door and window frame rules prevent an opening area from being mistaken for the length of frame material.


## Before relying on the result

Door frames use two jambs and a head. Window frames use the full perimeter. Hardware and profile quantities are separate.


## Tool limitations

Door frames use two jambs and a head. Window frames use the full perimeter. Hardware and profile quantities are separate.

## Questions

### Does it count hinges and other hardware?

No. Hardware, profiles and fittings need their own specification and quantity schedule. The output covers area and frame length.

### What should I check before using Door & Window Area Calculator?

Check Measurement unit, Area rate, Reference and Type. Use the exact units shown beside the controls and replace any example values with your own inputs.

Source page last modified (UTC): 2026-10-01T14:08:57+00:00

This profile describes the tool. It does not execute it or supply a professional certification.