Tile Calculator
Estimate tile quantities from floor and tile dimensions.
Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations retain full precision.
- Estimate excludes grout gaps and layout-specific cutting patterns.
Example Calculation
- Floor area: 20 m²
- Tile width: 30 cm
- Tile length: 30 cm
- Waste allowance: 10 %
20 m² with 30 × 30 cm tiles and 10% waste requires 245 tiles.
Frequently asked questions
How do I use this calculator?
Enter floor area, tile width, tile length, waste allowance. The result updates automatically. Use Reset to restore the example values.
What method does it use?
Tiles = ceil[area / tile area × (1 + waste / 100)]. Estimate excludes grout gaps and layout-specific cutting patterns.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.