Estimate grout volume and weight from tile size, joint width, filling depth and product density.
Your input
Outputs are cleared when the input changes.
Result
Enter your data or use the example, then run the tool.
Worked example
100 × 100 mm tiles, 2 mm joints, 3 mm depth, 1 m² and 1.6 kg/L gives about 0.1864 kg before allowance.
Method
Let L and W be tile length and width, and g the joint width, all in millimetres. The joint-area fraction is approximately 1 − LW/((L+g)(W+g)). Multiply it by tiled area in m² and filled depth in mm to get litres, then by product density in kg/L to get weight.
Limits
This is a geometric estimate, not a product-approved coverage formula. Tile edges, bevels, absorption and mixing affect usage. Enter density and bag weight from the product you will use.
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