Flooring
Tile Calculator Calculator USA 2026
Calculate the number of tiles and boxes needed for any floor or backsplash project, with a smart waste allowance.
Unit system
Enter your measurements
Results
Tile size
1.00 sq ft each
Tiles required
165
150 without waste
Coverage
150 sq ft
Calculation steps
- 1.Tile area = (12 × 12) ÷ 144 = 1.000 sq ft
- 2.Tiles (no waste) = 150 ÷ 1.000 = 150.0
- 3.With 10% waste = 150.0 × 1.10 = 165.0
- 4.Round up → 165 tiles
Includes a standard waste allowance. Verify with your supplier before ordering.
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Disclaimer: Estimates based on 2026 RSMeans USA data. Actual quantities vary by site conditions, waste and installer practices. Verify with your supplier or contractor before ordering.
How it works
- 1Enter the room area in square feet.
- 2Enter the tile size (inches).
- 3We add 10% waste and round up to full boxes.
Formula
Tiles = (Area ÷ Tile Area) × (1 + waste%)
Worked example
150 sq ft ÷ (12×12 in) = 150 tiles. With 10% waste = 165 tiles.
Frequently asked questions
How much waste for diagonal patterns?
Use 15–20% for diagonal or herringbone layouts.
What size grout line?
1/8" for ceramic, 1/16" for rectified porcelain.