/// Answer-first planning notes
How many tile pieces and full boxes cover my surface?
| Planning input | Calculation role | Product check |
|---|---|---|
| Surface dimensions | Create gross installation area | Measure each plane separately |
| Tile face dimensions | Set area covered by one piece | Use actual selected tile dimensions |
| Pieces per box | Round pieces into full cartons | Check the exact package label |
Tile surface and face-area conversions preserve physical size through the exact international-foot definition.
Evidence: National Institute of Standards and Technology/// Formula & field notes
How this tile estimate works
FormulaTile pieces = surface area × (1 + waste %) ÷ tile face area. Boxes = pieces ÷ pieces per box, rounded up twice.
Worked example
A 12 ft × 10 ft surface using 12 in square tiles, 10 per box, and 10% waste requires 132 tiles and 14 full boxes.
/// Source trail
Data & assumptions
Every source has a declared scope. A reference can support a conversion or product assumption without turning this estimate into a supplier quote.
Exact international-foot to meter conversion; U.S. survey-foot conversion is explicitly outside this claim.
Effective 2025-08-18 · Reviewed 2026-07-15 · Next review 2027-07-15Independent confirmation that one international foot equals exactly 0.3048 meters; U.S. survey-foot conversion remains distinct.
Effective 2025-06-10 · Reviewed 2026-07-15 · Next review 2027-07-15/// Common questions
Tile calculator FAQ
What should I verify before ordering tile?
Confirm field dimensions and actual tile size, box count, and layout pattern against the exact product or supplier information. ProjectQty shows the assumptions so you can replace planning defaults before ordering whole boxes.
How does waste affect the tile estimate?
Waste is applied after the base geometry is calculated and before discrete packages or pieces are rounded up. Use a higher allowance for complex layouts, cuts, pattern matching, breakage, or uncertain field dimensions.
Is this tile result a professional design?
No. It is a quantity-planning result. Substrate preparation, movement joints, waterproofing, mortar selection, and installation standards are separate.