justyourcalculatorTile Calculator
Tiles and boxes for a floor or wall, including grout gaps and waste.
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Tile Calculator
How many tiles and boxes to buy
10% for straight lays, 15% for diagonal or herringbone.
Tiles needed
130
118 to cover the area plus 10% waste
- Area
- 120 sq ft
- Area of one tile with grout
- 147.02 sq in
How it was calculated
- Tiles = area ÷ ((tile length + gap) × (tile width + gap)) = 117.54
- × (1 + 10%) = 129.29, round up: 130
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How the tile calculator works
Tiles needed = area ÷ the area each tile covers, where each tile covers its own size plus one grout gap in each direction. Then add a waste allowance for cuts and breakage and round up.
Buy whole boxes, and keep a few spare tiles from the same batch for future repairs, since colors vary between production runs.
Using and checking your result
Published by JustYourCalculator. Check the units and assumptions above, and compare a known example before relying on the output. Calculations use browser arithmetic and may round displayed values.
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