Flooring Calculator
Fill in the values and the answer updates as you type.
How the Flooring Calculator works
Area to buy = length × width × (1 + waste ÷ 100). Boxes are rounded up. A 10% allowance is typical for cuts and mistakes.
Inputs and results
The Flooring Calculator takes 4 inputs and gives 3 results.
What you enter
- Room length (m) — starts at 5.
- Room width (m) — starts at 4.
- Waste allowance (%) — starts at 10.
- Coverage per box (m²) — starts at 2.2.
What you get
- Boxes needed
- Area to buy (m²)
- Room area (m²)
Example: Flooring Calculator with the starting values
With room length 5 m, room width 4 m, waste allowance 10 % and coverage per box 2.2 m², the calculator returns:
| Boxes needed | 10 |
|---|---|
| Area to buy (m²) | 22 |
| Room area (m²) | 20 |
Change any value above and the results update straight away.
Flooring Calculator FAQ
How do I use the Flooring Calculator?
Enter room length, room width, waste allowance and coverage per box in the fields, then read boxes needed, area to buy (m²) and room area (m²) in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Flooring Calculator calculate?
Flooring area and boxes needed, including waste. It returns boxes needed, area to buy (m²) and room area (m²) from the 4 values you provide.
What values does the Flooring Calculator start with?
It opens with room length 5 m, room width 4 m, waste allowance 10 % and coverage per box 2.2 m² so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Flooring Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Flooring Calculator for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.