How it works
Room area × (1 + waste %) ÷ coverage per box = boxes needed.
Example
A 10 ft × 10 ft room (100 sq ft) with 10% waste and 20 sq ft boxes needs 5.5 boxes — so buy 6.
Flooring Calculator
Work out how many boxes of flooring to buy for a room, including a waste allowance for cuts.
- Free
- No sign-up
- Instant results
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Frequently asked questions
- How much waste should I allow?
- 10% is typical for straight layouts; allow 15–20% for diagonal patterns or busy rooms with lots of cuts. Always round boxes up.