Tile Calculator for 100 sq ft
Estimate tiles and boxes for 100 sq ft of tile.
Tiling 100 sq ft calls for about 115 sq ft of tile after a 15% waste allowance — bathrooms and kitchens have more cuts than open floors, so 15% is safer than the usual 10%. Enter your tile size below to convert square footage into exact tile and box counts.
Tiles needed
88
Includes 10% waste
Boxes
9
Area
80 ft²
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How does the tile calculator work?
Divide the total floor area by the coverage of a single tile (tile width × height ÷ 144 for inches to ft²). Add a 10% waste factor for cuts, and divide by tiles-per-box to get boxes.
Formula: tiles = (area ÷ tile ft²) × (1 + waste%)
What else do people ask about this calculator?
How much tile for 100 sq ft?
Order 115 sq ft (100 + 15% waste). Diagonal patterns need 20% waste; mosaic sheets around 12–15%.
Buy tile by square feet or by piece?
By square feet — every tile size has a different count per box. Ordering by square feet plus waste is the standard way pros calculate.
How much extra tile should I order?
10% for straight lay, 15% for diagonal or herringbone, 20% for complex patterns. Order attic stock to keep for repairs.
How many 12×12 tiles in a box?
Typically 10–15 per box, but always check the box label — coverage varies by manufacturer.
Which related calculators should I use next?
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