Free Tile Calculator for Floor, Wall, Shower, Backsplash, Tile Count, Waste, and Boxes
Use this browser-side calculator to turn measurements and material assumptions into a practical first-pass estimate. Review the formulas, verify units, and confirm product or site details before purchasing or building.
Use the calculator
How to use this calculator
1. Measure consistently
Use the units shown beside each input and recheck measurements before relying on the estimate.
2. Set real assumptions
Use product coverage, waste, density, spacing, or bag yield from the actual material when available.
3. Verify before ordering
Treat the output as a planning number, then compare it with drawings, packaging, supplier data, and site conditions.
12 useful features
Surface dimensions
Built into this calculator for a clearer planning workflow.
Tile dimensions
Built into this calculator for a clearer planning workflow.
Tile area
Built into this calculator for a clearer planning workflow.
Surface area
Built into this calculator for a clearer planning workflow.
Waste allowance
Built into this calculator for a clearer planning workflow.
Adjusted coverage
Built into this calculator for a clearer planning workflow.
Whole-tile count
Built into this calculator for a clearer planning workflow.
Optional box coverage
Built into this calculator for a clearer planning workflow.
Whole-box count
Built into this calculator for a clearer planning workflow.
Input validation
Built into this calculator for a clearer planning workflow.
Copy/download
Built into this calculator for a clearer planning workflow.
History/print/reset
Built into this calculator for a clearer planning workflow.
Formula and reference table
| Concept | Formula / meaning | Planning note |
|---|---|---|
| Surface area | length × width | Square feet |
| Adjusted area | area × (1 + waste%) | Ordering target |
| Tile area | width × height ÷ 144 | Tile dimensions in inches |
| Tile count | ceil(adjusted area ÷ tile area) | Whole tiles |
Pre-order checklist
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Quick knowledge check
What is the safest way to use a material calculator?
Microlearning guide
Volume is not coverage
Area measures a surface. Volume adds depth or thickness. Material bags, yards, and tons may require a volume conversion.
Rounding changes purchases
Whole boxes, bags, boards, or gallons often require rounding up even when the mathematical result is fractional.
Assumptions drive results
Waste, density, coverage, spacing, and product size can move an estimate more than extra decimal places.
Examples and practical uses
Early planning
Compare material scenarios before requesting supplier quotes.
Purchase cross-check
Compare the calculated quantity with package coverage or bulk-unit recommendations.
Measurement review
Use the formula table to independently reproduce the main calculation.
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Frequently asked questions
How is tile count calculated?
The calculator divides waste-adjusted surface area by the area of one tile and rounds up to a whole tile.
Does this account for grout joints?
No. Tile count is based on nominal tile dimensions; layout and grout-joint effects should be confirmed with the actual installation plan.
How much waste should I add?
Waste depends on pattern, cuts, breakage, room shape, tile size, and installer strategy. Use a project-appropriate allowance.
Can I use this for walls or showers?
Yes for simple rectangular surface-area estimates. Waterproofing, niches, corners, trim, patterns, and multiple surfaces need separate planning.
Why can box count differ from tile count?
Boxes are based on square-foot coverage per box, while tile count is based on individual tile area. Manufacturer packaging controls the purchase quantity.