Grout Calculator
Calculate how much grout you need for tile installation.
Enter tile size, joint width, and area to get the amount in pounds or kg.
Grout Needed
Grout fills the joints between tiles. The amount needed depends on tile size, joint width, tile thickness, and total area.
Formula:
Grout volume = Joint area × Joint depth × Total coverage area
Joint area per sq ft = ((Tile Length + Tile Width) / (Tile Length × Tile Width)) × Joint Width × Joint Depth
Grout coverage per 25 lb (11.3 kg) bag:
| Tile Size | 1/8" joint | 1/4" joint | 3/8" joint |
|---|---|---|---|
| 4×4 inches | 70 sq ft | 35 sq ft | 24 sq ft |
| 6×6 inches | 95 sq ft | 48 sq ft | 32 sq ft |
| 12×12 inches | 180 sq ft | 90 sq ft | 60 sq ft |
| 12×24 inches | 240 sq ft | 120 sq ft | 80 sq ft |
| 24×24 inches | 355 sq ft | 178 sq ft | 118 sq ft |
Tips:
- Add 10% extra for waste
- Sanded grout is used for joints wider than 1/8 inch (3 mm)
- Unsanded grout is used for joints 1/8 inch (3 mm) or narrower