Tool
Tile Calculator
Estimate tile count from room size, tile dimensions, and waste allowance.
Construction Calculators
What this tool does
Estimate the number of square or rectangular tiles required for a floor or wall area, including a configurable waste allowance.
How to use
- Enter room length and width in feet.
- Enter tile size in inches and your waste percentage.
- Review the rounded tile count for ordering.
Examples
10x8 room with 12-inch tiles
Input: Length: 10 ft, Width: 8 ft, Tile: 12 in, Waste: 10%
Output: Tiles needed: 88
80 sq ft area plus 10% waste divided by 1 sq ft per 12-inch tile.
Assumptions
- Tiles are square with size entered in inches.
- Tile count is rounded up to the nearest whole tile.
- Does not model grout width or partial box rounding by retailer.
Common use cases
- Estimate floor tile for bathrooms and kitchens
- Plan backsplash tile orders
- Compare tile sizes before purchasing
FAQ
Can I use this for wall tile?
Yes. Enter the net tiled wall area as length × width in feet.
What about grout lines?
Grout gaps slightly reduce tile count; waste percentage usually covers this.
Do I need extra for cuts?
Yes. Use 10% waste for simple layouts and up to 15% for diagonals or niches.
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Last reviewed: 2026-05-23