Flooring Calculator
Enter the room length and width and choose a waste allowance to see how much flooring to buy.
Your details
Result
Order (+10% waste)
22.00 m²
room area 20.00 m²
- Straight lay: 5–10%. Diagonal lay: 15–20%. Buy all material from the same lot.
Good to know: A 5 m × 4 m room is 20 m², so order 22 m² with a 10% allowance.
Please note: Estimates only. Measure your actual space, buy a little extra, and check product labels, safety requirements and local building rules. Do not rely on this for structural or safety-critical work.
About this tool
Calculate flooring material needed based on room area — for laminate, hardwood, tile, and vinyl flooring projects.
Formula
Material = room area × (1 + waste%). Waste factor: 5-10% for straight layouts, 15% for diagonal.
Reference values
- 5-10% waste for straight lay
- 15% waste for diagonal patterns
- Buy all material from the same lot
Questions people ask
How much waste should I allow?
5–10% for a straight lay, and 15–20% for diagonal patterns.
What about awkward corners and alcoves?
Measure them separately and add them to the total area.
Should I buy all the flooring at once?
Yes, from the same lot, so colours match.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it.
Spotted a mistake? Tell us and we'll check it. How we check our calculators