Measure your surfaces
Floor area and wall area are different. Subtract untiled openings and count each surface once.
Interiors/Area · FREE
Tile & Box Quantity
Plan tile purchases using dimensions, grout joints, your waste allowance and whole boxes.
Your planning summary
Complete the inputs to see your result and assumptions. No login or contact details required.
UNDERSTAND YOUR RESULT
Understand Your Tile and Box Quantities
Measure the surface, choose the actual tile size and allow for cuts. Whole-box rounding may mean purchasing more tiles than the measured area alone suggests.
Choose tile size and pattern
The tool rounds tiles and then boxes upward. Layout cuts and reusable offcuts can change the practical allowance.
Review waste and whole boxes
Choose your waste allowance explicitly. Diagonal or custom patterns do not silently add a hidden percentage.
Explore an illustrative example
10 × 12 ft room. Use the example button in the calculator to apply these editable inputs.
Illustrative measurements or assumptions only; not an approved design, quote or offer.
What changes your result?
- Measure each surface. Floor area and wall area are different. Subtract untiled openings and count each surface once.
- Whole boxes affect purchases. The tool rounds tiles and then boxes upward. Layout cuts and reusable offcuts can change the practical allowance.
- Pattern does not certify waste. Choose your waste allowance explicitly. Diagonal or custom patterns do not silently add a hidden percentage.
Assumptions and limits
Confirm measurements, inclusions and price assumptions. These planning results do not replace professional engineering, legal or lender advice.
Results retain the assumptions you selected. Compare like-for-like areas and avoid counting the same item twice.
View Technical Calculation Details
Area=entered total or sum(rectangular surfaces). Module=(tile length+joint)×(tile width+joint); tiles=ceil(area/module×explicit waste factor); boxes=ceil(tiles/box size). No automatic pattern multiplier.
Currency totals: 2 decimal places; geometry and quantities: 6. Whole units/boxes round upward with floating-point ULP correction; internal calculation precision is retained.
Formula 2.0.0 · Content/schema 2
Sources and review information
References last checked 2026-10-29. This is not certification of a fee schedule or property.
Your questions, answered
Measure each surface
Floor area and wall area are different. Subtract untiled openings and count each surface once.
Whole boxes affect purchases
The tool rounds tiles and then boxes upward. Layout cuts and reusable offcuts can change the practical allowance.
Pattern does not certify waste
Choose your waste allowance explicitly. Diagonal or custom patterns do not silently add a hidden percentage.
Can I save or download for free?
Yes. PDF and comparisons are free. Saving a report is optional and needs consent; a calculation needs no contact details.
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