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 use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Repeating rectangular tile grid. Edge effects and irregular joint shapes are excluded; use product density separately for mass.
Example Calculation
- Tiled area: 10 m²
- Tile length: 300 mm
- Tile width: 300 mm
- Joint width: 3 mm
- Joint depth: 8 mm
- Waste allowance: 10 %
A 10 m² nominal grid of 300 mm tiles with 3 mm joints, depth 8 mm and 10% waste needs about 1.734 L.
Frequently asked questions
How do I use this calculator?
Enter tiled area, tile length, tile width, joint width, joint depth, waste allowance. The result updates automatically. Use Reset to restore the example values.
What method does it use?
joint fraction=1−tile area/((length+joint)(width+joint)); liters=area × depth × fraction × (1+waste).. Repeating rectangular tile grid. Edge effects and irregular joint shapes are excluded; use product density separately for mass.
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.