Tile Grout Calculator
Grout kilograms from tile size, joint width and depth.
Big tiles + thin joints = startlingly little grout (600×600 @3 mm: ~0.1 kg/m²); mosaic sheets are 10×. Epoxy grout: same volume, ~1.6 density, triple the price, zero stains.
Formula
Tile Grout Calculator is a free grout calculator for civil engineers, contractors and quantity surveyors — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Tile Grout Calculator
Grout kilograms from tile size, joint width and depth. The calculation implements kg/m² = (L+W)/(L×W) × joint × depth × 1.8 (Grout manufacturer charts (Laticrete/Mapei formula)). Big tiles + thin joints = startlingly little grout (600×600 @3 mm: ~0.1 kg/m²); mosaic sheets are 10×. Epoxy grout: same volume, ~1.6 density, triple the price, zero stains.
How to use Tile Grout Calculator
- 1Enter Tiled area in m².
- 2Enter Tile length in mm.
- 3Enter Tile width in mm.
- 4Enter Joint width in mm.
- 5Read Grout needed (+10%) instantly — no submit button needed.
- 6Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Tile Grout Calculator?
- ✓Implements the standard formula — kg/m² = (L+W)/(L×W) × joint × depth × 1.8
- ✓Reference cited on-page: Grout manufacturer charts (Laticrete/Mapei formula)
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Tile Grout Calculator use?+
It computes kg/m² = (L+W)/(L×W) × joint × depth × 1.8, per Grout manufacturer charts (Laticrete/Mapei formula). The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
Big tiles + thin joints = startlingly little grout (600×600 @3 mm: ~0.1 kg/m²); mosaic sheets are 10×. Epoxy grout: same volume, ~1.6 density, triple the price, zero stains.
Does it include wastage?+
Yes — standard wastage/bulking factors are built in and stated in the formula line, so the quantity is an orderable number, not a bare geometric volume.
Is the Tile Grout Calculator free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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