General Tile Calculator
Estimates the number of tiles needed for a floor area and individual tile area, including a waste allowance.
How it works
Tile count with waste
Formula and assumptions
Tiles required = round up(floor area ÷ tile area × (1 + waste percentage ÷ 100)). Measure the actual coverage area and add extra tiles for cuts, breakage, pattern matching and future repairs.
Example
Use the sample values, calculate, and change one input at a time.
Frequently asked questions
Are results exact? Results depend on the assumptions and inputs above.
Can I use this for professional decisions? Verify critical results independently.
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Frequently asked questions
Does it include extra tiles for cuts?
Yes, through the waste percentage you enter. Choose an allowance appropriate for your layout and pattern.
What should I check before relying on the result?
Confirm the input units and assumptions described above; independently verify safety-critical, medical, financial or professional decisions.
How many extra tiles should I buy?
The allowance depends on the room shape, tile size, pattern, cuts and installer recommendations. Enter a suitable waste percentage and confirm with your installer.
Should I use the tile’s nominal size or coverage area?
Use the actual coverage area specified by the manufacturer, including grout-joint assumptions where applicable.