Tile Quantity
Convert a floor area into tiles, boxes and waste allowance.
Your numbers
Tiles needed
Planning estimate from your measurements and assumptions. Confirm dimensions, product coverage and local installation requirements before buying.
Scenario comparison
Up to three snapshots in this tab. Loading one replaces the current inputs.
Formula
Use N = ceil[A(1+w)/(lb)]. A is net area in m², l and b are tile dimensions converted to m, and w is waste allowance as a fraction. ceil rounds up to whole tiles; boxes are rounded up separately.
Convert a floor area into tiles, boxes and waste allowance.
Worked example
- Net area (m²)
- 20
- Tile length (cm)
- 50
- Tile width (cm)
- 50
- Tiles per box
- 8
- Waste allowance (%)
- 10
- Tiles needed
- 88
- Boxes to buy
- 11
- Area including waste
- 22 m²
Scope and limitations
Planning estimate from your measurements and assumptions. Confirm dimensions, product coverage and local installation requirements before buying.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: 3ad87911a12a · Example checked: