Tile Grout Calculator
Estimate grout needed for tiled surfaces.
How It Works
Grout (ft³) = (2 × (Tile W + Tile L) × Tile count × Joint × Thickness) ÷ 1728.
Example
100 sq ft of 12×12 tile, 1/4 in joint, 3/8 in thick: ≈ 0.26 cu ft ≈ 36 lb of grout.
Frequently Asked Questions
How much grout does a bag make?
A standard 25 lb bag of grout covers roughly 100–200 sq ft depending on joint and tile size.
Wider joints need more grout?
Yes — joint width and tile thickness are the biggest drivers of grout volume.
Should I order extra grout?
Yes, add 10% for mixing and touch-ups. Grout color can vary between batches.