Tile Calculator
Calculate how many tiles you need for a floor or wall.
Includes grout coverage and waste percentage.
Tiles Needed
Tile calculation:
Floor Area = Length × Width
Tile Area = Tile Length × Tile Width
Tiles Needed = Floor Area / Tile Area × (1 + Waste %)
Unit conversions:
1 foot = 0.3048 meters1 inch = 2.54 cm1 sq ft = 0.0929 sq m
Waste guidelines:
- Straight lay: 10% waste
- Diagonal lay: 15% waste
- Complex pattern: 20% waste
Grout coverage:
- Typical grout bag (25 lbs) covers ~100 sq ft for 12×12 tiles with 1/8" joints
- Wider joints or smaller tiles require more grout
Imperial tips:
- Common tile sizes: 12×12 in, 18×18 in, 24×24 in
Metric tips:
- Common tile sizes: 30×30 cm, 45×45 cm, 60×60 cm