Estimate grout volume for a tiled floor or wall.
The total joint length per square foot is estimated from the tile size, then multiplied by joint width and depth to get volume. Grout is boxed in fixed weights, so a volume estimate converted to boxes keeps one trip to the store covering the whole floor.
Grout Quantity
Joint length per sq ft = 288 / tile size; volume = length x width x depth
Joint length per sq ft = 288 / tile size; volume = length x width x depth The total joint length per square foot is estimated from the tile size, then multiplied by joint width and depth to get volume.
Grout is boxed in fixed weights, so a volume estimate converted to boxes keeps one trip to the store covering the whole floor.
This calculator takes 5 inputs: Tile area, Tile size, Joint width, Joint depth, Box size. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.