Tile Grout Volume Estimator
Estimate grout joint volume for square tiles using a thin-joint approximation.
Your inputs
Calculation results
Formula & assumptions
Approximate joint fraction = 2w/(tile+w) − [w/(tile+w)]²; volume = area × depth × fraction.
Values use the specified units. Calculations use floating-point arithmetic. Check input measurements and formula assumptions before applying the result.
Compare your scenarios
Save up to five results to compare changes side by side. Scenarios stay in this tab until you clear or reload it.
Using Tile Grout Volume Estimator
Estimate grout joint volume for square tiles using a thin-joint approximation.
- Enter covered area, tile side, joint width, joint depth, waste using the units printed under each field.
- Choose Calculate, or enable live updates. Review the result labels and formula assumptions.
- Save scenarios to compare up to five variations, then copy the report or download JSON or CSV.
Example
Covered area: 10 square meters Tile side: 300 millimeters Joint width: 3 millimeters Joint depth: 8 millimeters Waste: 10 percent Joint volume · liters: 1.576316 Volume with waste · liters: 1.7339477
Questions & answers
What does Tile Grout Volume Estimator calculate?
Estimate grout joint volume for square tiles using a thin-joint approximation.
Which units should I enter?
Covered area uses square meters. Tile side uses millimeters. Joint width uses millimeters. Joint depth uses millimeters. Waste uses percent. Convert values to these units before calculating.
Which formula does it use?
Approximate joint fraction = 2w/(tile+w) − [w/(tile+w)]²; volume = area × depth × fraction.
What does the included example show?
Covered area: 10 square meters; Tile side: 300 millimeters; Joint width: 3 millimeters; Joint depth: 8 millimeters; Waste: 10 percent. Result: Joint volume · liters = 1.576316; Volume with waste · liters = 1.7339477.
Can I compare different settings?
Yes. Save a scenario, change the inputs and save another result. Up to five scenarios are compared in this tab; they disappear when you reload or leave.
Can I export the calculation?
Copy the JSON report or download JSON and CSV with inputs, result labels and numeric values. Processing uses local JavaScript; no calculation request is sent to our server. Displayed values use up to 10 significant digits; exports retain JavaScript numeric precision.
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