Carpet Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the room length and width.
- Enter the carpet roll width and a waste %.
- Read the area and linear metres of roll.
How it works
Area × (1 + waste%) ÷ roll width = linear metres. Carpet is sold by the linear metre off a fixed-width roll.
Worked example
5 × 4 m, 3.66 m roll, 10% waste. = 22 m² → about 6.0 linear metres.
Tips
- Runs entirely in your browser. Your inputs are not saved or transmitted.
Frequently asked questions
Why does roll width matter?
Carpet comes in fixed widths (often 3.66 m), so you buy whole-width lengths — plan seams carefully.
Privacy?
Runs entirely in your browser. Your inputs are not saved or transmitted.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.