Grout Calculator
Estimate prepared grout volume from a periodic tile-joint grid, depth, allowance and manufacturer bag yield.
YOUR CALCULATION
Result
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Calculation steps
Work through one step at a time or reveal the complete calculation. The steps use your current inputs.
How to calculate
Form the repeating tile-plus-joint cell. Subtract the tile face fraction to obtain joint area fraction. Multiply tiled area, joint fraction and filled depth. Apply allowance, entered density and manufacturer bag yield.
Volume=A×depth×[1−LW/((L+g)(W+g))]
Worked example
With zero joint width, this periodic-grid model gives zero joint volume regardless of tile face size.
Assumptions and input details
A large periodic rectangular grid is assumed; perimeter joints and openings are not counted separately. Density describes prepared grout. Bag yield must come from the product, not from a guessed dry-mix density.
Unit definitions
Unit selection is independent of language. Each selector contains only units for its physical quantity. Calculations use defined base units internally.
Choose from 23 length definitions, including explicitly labelled regional measures. Area conversions square the length factor; geometric volumes cube it.
Regional measures are not interchangeable merely because their names look similar. This is a documented selection, not a claim to include every historical unit.
NIST measurement tables · Japanese traditional units · Mainland China and Hong Kong unit distinctions
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
Is my input uploaded?
The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.
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