Room Area Calculator
Floor area, walls and materialsRuns locally · nothing uploaded
NameShapeLength / base / diameterWidth / heightTop side (trapezoid)
Total area
408 ft²
In square feet / meters
37.9 m²
Material to buy
448.8 ft²
Also works as:square footage calculatorflooring calculatorroom size calculator
How to use
- 1Add rooms with shape and dimensions.
- 2Optionally enter ceiling height for wall area.
- 3Set the waste factor to see material needed.
FAQ
How much extra flooring should I buy?
About 5–10% for straight layouts and 10–15% for diagonal or irregular rooms.
How is wall area calculated?
Perimeter × ceiling height, minus doors and windows when painting.