Grout Calculator

Project measurements

How to measure
  1. Measure the tiled area in square feet (length × width).
  2. Read the tile’s actual size and thickness from the carton.
  3. Use the joint width your installer will use.

Quick start · tap one, then fine-tune

Area
Tile size
Grout line

The gap between tiles. Fractions like 1/8 work.

Results update as you type.

US length fields accept 12.5 or 12 ft 6 in. Your measurements stay in this page.

MAKE IT YOURSProduct & allowance assumptions5 settings · defaults shown · optional

Actual thickness from the carton.

Default: 0.375 in

Example worked back from Custom Building Products’ Polyblend Plus Sanded chart. Check your grout’s chart.

Default: 110 lb/ft³

MAPEI recommends 5–10% overage.

Default: 10 %

25 lb is a common sanded grout bag.

Default: 25 lb

Default: blank

Calculator by Nestsums