How it works
Approximate modules = area × 144 ÷ ((tile length + joint) × (tile width + joint)), then apply waste and round up.
Input definitions
- Surface area (ft²)
- Enter the value in the labeled unit.
- Tile length (in)
- Enter the value in the labeled unit.
- Tile width (in)
- Enter the value in the labeled unit.
- Grout joint width (in)
- Enter the value in the labeled unit.
- Waste allowance (%)
- Enter the value in the labeled unit.
A worked example
- Surface area (ft²)
- 120
- Tile length (in)
- 12
- Tile width (in)
- 6
- Grout joint width (in)
- 0.125
- Waste allowance (%)
- 12
Assumptions & limits
Uses only the values entered. Rates are illustrative inputs, not live quotes, legal rules or personalised advice. Check provider terms, local requirements and measurements before acting.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-19. Content checked against the stated method and examples. Our verification approach.
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Common questions
Why is this approximate?
Perimeter joints, layout, cuts and pattern repeats change actual tile use. Dry-lay the pattern before ordering.
How does Tile count with grout joints calculate the result?
Approximate modules = area × 144 ÷ ((tile length + joint) × (tile width + joint)), then apply waste and round up.
What should I verify before using Tile count with grout joints?
Uses only the values entered. Rates are illustrative inputs, not live quotes, legal rules or personalised advice. Check provider terms, local requirements and measurements before acting.