Calculator

Calculate tiles to buy

Risk without calculating: discontinued series, delays, underestimated cuts.
Benefit: m² + allowance + number of tiles and boxes based on size and packaging.

Area to tile

Length (m) Width (m) Area to subtract (m²) — optional

Example: an area not tiled on the floor, a large fixed unit, etc.

Tile

Size (cm)

Tiles per box Cutting allowance (%)

Quick guide: 10% (straight lay), 15% (many angles/cuts), 20% (diagonal / patterns).

Results

Net area (m²)

—

Area = length × width − subtraction

Area with allowance (m²)

—

Includes cutting allowance

Tiles

Item	Value
Area per tile	—
Tiles needed (rounded)	—
Boxes needed (rounded)	—
Anti-shortage tip	—

This is an estimate. To avoid series issues, it’s often wise to buy one extra box.

Quick tip

Straight lay: 10% allowance. Many cuts (small rooms, angles, niches): 15%. Diagonal / patterns: 20% (or more). Also consider skirting/thresholds if tiled.