Flooring calculator
Round up to whole packs using your supplier’s coverage per pack.
Order area = length × width × (1 + waste ÷ 100)
Formula
Length × width × (1 + waste ÷ 100)
How the calculation works
Estimate flooring area with an allowance for cutting waste. Enter each measurement in the unit shown beside the input. The result updates when you change a value; incomplete or unsupported inputs display an explanation.
Worked example
A 5 m × 4 m room needs 22 m² with a 10% allowance.
When to use this calculator
Use this before converting required area to whole product packs.
Common mistakes and limits
A suggested allowance is not a guarantee. Diagonal layouts and irregular rooms can need more.
Check your result
Check that all measurements describe the same object or time period. Repeat the calculation with unrounded values, then round only the final quantity to a precision suitable for the task.
Frequently asked questions
Does this calculator need an account?
No. Calculations run in your browser without an account.
How precise is the displayed result?
The display rounds to six decimal places. Measurement uncertainty can be larger than this rounding.
