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Construction Calculators

Grout Calculator

Calculate the pounds of sanded grout needed for a tiled area based on tile size, joint width and joint depth.

in
in
in
in
sq ft
Grout needed —
Bags needed (25 lb) —
Ad Space — 300×250

About the Grout Calculator

This calculator estimates how much sanded grout you need to fill the joints of a tiled floor or wall, using an industry rule-of-thumb formula that scales with tile size, joint width and joint depth.

Formula: Grout (lbs per sq ft) = ((Tile Length + Tile Width) ÷ (Tile Length × Tile Width)) × Joint Width × Joint Depth × 32.4; Total Grout = Grout per Sq Ft × Area

Smaller tiles need more grout per square foot because they have more total joint length. This is an estimate — always round up and buy a full extra bag, since running short mid-job can cause visible batch-to-batch color variation.

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