Tile Calculator
Estimate tiles needed and cost from room area, tile size, and waste.
Practical calculatorGeneral editable assumptionsGlobal-readyInteractive chart
Last updated: 2026-06-03
This calculator uses generic assumptions. Use advanced mode to override them for a more accurate result.
Inputs
Formula transparency
Source: defaulttiles = ceil(roomArea × (1 + waste) / tileArea)
How to use it
- Enter the room length and width in meters.
- Enter tile size in centimeters and a waste %.
- Add price per tile and labor for total cost.
Example
- A 5m × 4m room with 60×60 cm tiles and 10% waste needs 62 tiles.
What the result means
Tiles needed already includes waste; buy one extra box for future repairs.
Common mistakes
- Forgetting waste for cuts and breakage.
- Mixing meters and centimeters.
Limitations
- Diagonal layouts need a higher waste %.
- Excludes adhesive and grout.
Frequently asked
- Why add waste?
- For edge cuts and breakage; ~10% straight-lay, ~15% diagonal.
- How to enter tile size?
- In centimeters (e.g. 60×60); we convert to meters automatically.
- Does it include adhesive?
- No — budget adhesive and grout separately.
- Walls too?
- Yes — enter the wall area the same way as a floor.
- Is it exact?
- It's an estimate; buy one extra box as backup.
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Results are estimates and not professional advice. Verify important decisions with a qualified professional.