Quantity of Grout for Tile Joints

Use repeating tile grid estimate joint volume and mass of grout.

Your numbers

Grout mass including extra for waste

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Planning estimate from your measurements and assumptions. Confirm dimensions, product coverage and local installation requirements before you buy.

Formula

Use f = 1−lb/[(l+j)(b+j)] and V = Afd. l, b and j na tile length, width and joint width for di same unit; A na area for m² and d na joint depth for mm. V na litres; mass still include di density and waste wey you enter.

Use repeating tile grid estimate joint volume and mass of grout.

Example wey show the calculation

Area wey need covering (m²): 20
Length of tile (mm): 300
Width of tile (mm): 300
Width of joint between tiles (mm): 3
Depth of the joint (mm): 5
Density of mixed grout (kg/L): 1.6
Allowance for waste (%): 10

Grout mass including extra for waste: 3.4679 kg
Volume inside the joints: 1.9704 L

Where e fit work and limits

Planning estimate from your measurements and assumptions. Confirm dimensions, product coverage and local installation requirements before you buy.

We check inputs for missing values and allowed ranges. Result wey pass the finite numeric range no go show. Rounding affect wetin display, while calculation use the model numeric precision.

Check your units and assumptions before you rely on result. Changing label no convert currency or physical unit.

Version of di formula: 44fb6aa54914 · Example don get check: 2026-10-30

Method