Tile Calculator

Formula

ceil(area×(1+waste%)÷tile area)

Worked example

20m², 0.25m² tiles, 10% waste — 88

Quick answer

What does the Tile Calculator do?

Estimate tile count including waste percentage.

What is the Tile Calculator?

Estimate tile count including waste percentage. Use it when you have the required inputs and want a deterministic, repeatable result with the calculation method visible.

How to use this calculator

Enter the values requested by the tool, keep units and time periods consistent, resolve any validation message, calculate, then review the primary answer together with the displayed formula and supporting values.

Formula and method

This calculator uses the deterministic formula ceil(area×(1+waste%)÷tile area). Enter the required values, then review the displayed substitution and result breakdown to verify the calculation.

Worked example

20m², 0.25m² tiles, 10% waste 88

Common mistakes to avoid

Check units, decimal points, percentages, signs, date/time order, selector choices, and rounding. For important decisions, verify the result against an independent source or qualified professional when appropriate.