Home Calculators Mapei Grout Calculator

Mapei Grout Calculator

Calculate exactly how many bags of Mapei grout you need — by tile size, joint width, depth, and area — with product selection, waste factor, and full cost estimate.

Uses Mapei's official coverage formula  ·  Add 10% waste for cuts & waste

Project Area

Total tile area to be grouted

Tile & Joint Dimensions

Tile size, grout joint width, and thickness

Common tile sizes

Mapei Grout Product

Select the Mapei grout line for accurate bag weight & coverage

Quick Presets

Common tiling project scenarios

Grout Summary

Select a product
bags needed
Net Area
With Waste
Grout Needed
Bag Size
Coverage/Bag
Est. Cost

Joint Width Guide

≤1/16"Unsanded
1/16"–3/8"Unsanded/Sanded
3/8"–1/2"Sanded
>1/2"Sanded / Mortar

Mapei Tips

• Mix grout to a peanut-butter consistency

• Work in 10–15 sq ft sections

• Clean haze within 30 min of application

• Allow 24–72 hrs cure before grouting