Tile Calculator

Estimate tiles, waste, and boxes for one or more rooms with pattern and grout options.

Calculate how many tiles and boxes you need for one or more rooms. Choose your units, tile pattern, grout gap, and waste allowance.

All calculations run locally in your browser. Values are estimates only and work best when you match your actual tile and room measurements.

Tile summary

Total area (rooms)

- m²

Pattern:Straight lay

System: Metric (m, cm, mm)

Waste: 10% (base)

Tiles to buy

Includes your waste allowance and pattern adjustment.

Boxes or packs

Based on the tiles per box value you enter.

The calculator converts your room sizes into total area, then divides that by the tile size plus grout gap to find how many tiles fit. A waste allowance is added, with extra waste for diagonal and herringbone patterns.

For the most accurate result, measure each room carefully and use the tile dimensions printed on the packaging.

Measurement system

Tile pattern

Room sizes

Room 1 length (m)

Room 1 width (m)

Add a second room

Add a third room

Tile size and grout

Tile length (cm)

Tile width (cm)

Grout gap between tiles (mm)

Tiles per box or pack

Base waste percent

Diagonal and herringbone patterns use more tiles. The tool adds an extra allowance on top of this base waste percent for those patterns.