Tile grout calculator
Estimate grout mass from joint geometry.
Your measurements
Enter your project values. Your estimate updates as you type.
View your estimateExample values are a starting point. Check product yields and specifications before ordering.
YOUR ESTIMATE
Grout required
Calculated from your measurements.
How it's calculated
Joint fraction = 1 − tile face area ÷ [(tile length + joint) × (tile width + joint)]. Mass = area × joint fraction × depth × density, with waste.
Calculations use consistent units for your selected measurements. The waste allowance is applied once to the measured requirement. Whole purchase quantities are rounded up.
What this estimate includes
Assumes a regular rectangular grid with fully filled joints. Product density and tile profiles vary; verify with the grout supplier.
Quantity and arithmetic estimates only. Use project specifications for installation and design requirements.