Grout Calculator
This grout calculator will help you determine the amount of tile grout needed for your next tiling project.
Volume needed2.057 US gallons7.79 litres, including 10% waste
Quarts8.23
Litres7.787
Cubic feet0.275
Area covered24 sq ft
Thickness0.125 in3.18 mm
Coverage at this thickness11.67 sq ft per gallon
The method
volume = area × depth, or area ÷ stated coverage
Coverage is thickness in disguise
A gallon is 231 cubic inches, so spread ⅛ inch thick it covers 1,848 square inches — about 12.8 square feet. Halve the thickness and you double the coverage; the two numbers are the same fact stated differently.
Self-levelling products need the thickness right, because too thin will not level and too thick can cure hot and crack. Check the manufacturer’s range before trusting an arithmetic answer.