Tile Grout Quantity
Estimate joint volume and grout mass from a repeating tile grid.
Your numbers
Grout mass including waste
Planning estimate from your measurements and assumptions. Confirm dimensions, product coverage and local installation requirements before buying.
Scenario comparison
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Formula
Use f = 1−lb/[(l+j)(b+j)] and V = Afd. l, b and j are tile length, width and joint width in the same unit; A is area in m² and d is joint depth in mm. V is litres; mass also includes entered density and waste.
Estimate joint volume and grout mass from a repeating tile grid.
Worked example
- Net area (m²)
- 20
- Tile length (mm)
- 300
- Tile width (mm)
- 300
- Joint width (mm)
- 3
- Joint depth (mm)
- 5
- Mixed grout density (kg/L)
- 1.6
- Waste allowance (%)
- 10
- Grout mass including waste
- 3.4679 kg
- Joint volume
- 1.9704 L
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: 44fb6aa54914 · Example checked: