Grout & Thinset Calculator — Bags Needed for Tile

How the grout & thinset calculator works

Grout coverage scales with tile size and joint width. A 10 lb bag of sanded grout covers ~50 ft² of 12 in tile with a 1/8 in joint. Thinset (50 lb bag) covers ~75 ft² for 12 in tile with a 3/8 in trowel.

Frequently asked questions

How much grout for a bathroom floor?

A 60 ft² bathroom with 12 in tile and 1/8 in joints needs about 2 bags (10 lb each) of grout.

What size trowel for thinset?

1/4 in × 3/8 in square-notch for 12 in tile; 1/2 in for large-format tile 15 in or larger.

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