Tile Calculator
Estimate tile quantity from room dimensions, tile size and a cutting allowance before a renovation.
Set your values
Adjust the values, then calculate your result.
How to use Tile Calculator
- Enter the measurements or amounts in the fields above.
- Check that dimensions, rates and units match the labels.
- Select “Calculate tiles” to see a clear estimate and the formula used.
How the tile calculator works
Tile count = floor area ÷ one tile area, multiplied by the cutting allowance and rounded up to a whole tile.
Check your measurements and assumptions
This is an area estimate and does not model grout lines, patterns, borders, broken tiles or separate wall and floor layouts. Buy matching tiles from the same batch when possible.
Review the estimate before you act
Compare this result with an independent measurement, supplier quote or institution guidance when the decision matters. Confirm that the units and assumptions match the labels above, and update the inputs when the conditions change. Keep a note of the values used so you can reproduce the estimate later. This calculator is a planning aid and does not replace professional, product-specific or local guidance.
How many spare tiles should I buy?
A 10% spare allowance is a common starting point for simple layouts. Add more for diagonal patterns, many corners or future repairs.
Is input uploaded?
Processing takes place in your browser. This tool does not send your input or selected files to a conversion API.