Calculate how many tiles you need for floors, walls, and backsplashes. Includes grout line and waste adjustments.
12×12" tiles
| Total Area | 80.0 ft² |
| Area per Tile | 1.021 ft² |
| Tiles (no waste) | 78.4 tiles |
| Tiles (with ${waste}% waste) | 87 tiles |
Buy extra tiles from the same dye lot — colors can vary between batches.
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Effective Tile = (L + grout) × (W + grout)
Tiles = Total Area ÷ Effective Tile Area
With Waste = Tiles × (1 + waste%)
Add 10% for straight layouts. Add 15% for diagonal layouts. Add 20% for complex patterns.
Grout lines add to effective tile size. A 12×12 tile with 1/8" grout has an effective size of 12.125"×12.125".
Measure room area (sq ft) ÷ tile area (sq ft per tile). Add waste percentage.
Varies by tile size. Check the box — it lists coverage in sq ft per box.
Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.