How this calculator works
Divide floor area by the coverage of each tile or box, then add a suitable cut/waste allowance. The result is an estimate and may vary with the product, site conditions, measurement accuracy and installation method.
Before you use the estimate
- Measure the area carefully and keep units consistent.
- Review any waste allowance and material coverage assumptions.
- Check the product packaging or supplier specifications before purchasing.
Worked example
A 200 ft² floor, 10% waste, boxes covering 20 ft²: 200 × 1.1 = 220 ft² → ÷ 20 = 11 boxes. Try these numbers in the calculator above to see each step.
Frequently asked questions
How many tiles do I need for my floor?
Start with accurate room dimensions — here is how to measure a room — then divide your floor area (plus waste) by one tile’s area. The calculator above does the math and rounds up to whole boxes.
What waste percentage should I use for tile?
10% for straight layouts, 15% for diagonal or herringbone patterns where offcuts are more frequent. Waste allowance guide →
Why does the result round up to boxes?
Tiles are sold by the box, not individually. Rounding up guarantees you won’t run short halfway through the job.
Planning note: This tool provides general information, not engineering or construction advice. Verify important measurements with a qualified professional when needed.