Apply for financingGrout calculator
This grout calculator estimates the cubic feet of joint and the pounds at a density you enter. The thinset setting is a thinset calculator: area divided by the square feet per bag. A grout coverage calculator chart on a bag is the check on both numbers.
Grout
4.27lb
Planning estimate from the numbers you enter. Coverage, density, waste and price are assumptions, not a supplier quote or an engineering specification.
How it works
Each tile sits in a module of tile length plus joint width, by tile width plus joint width. Tiles per square foot are 144 divided by that module area. Grout per tile, in cubic inches, is joint width times joint depth times the length of the two joints and the corner once: tile length plus tile width plus joint width. Cubic feet are those cubic inches times tiles per square foot times the area, divided by 1,728. Pounds are cubic feet times the pounds per cubic foot you enter. One hundred is a starting density so the example has a number. Match the bag if it publishes a density or a coverage chart. The grout coverage calculator you trust is that chart. This geometry is the estimate before the chart corrects it.
Formula
Divide by 1,728 after multiplying by tiles per square foot and by area. Thinset bags = area ÷ square feet per bag, rounded up. The thinset coverage is yours, from the trowel size the bag describes.
Example
Joint width is 0.125 inch and depth is 0.25 inch. At 100 pounds per cubic foot that is 4.27 pounds, or 0.043 cubic feet. Switch to thinset and 40 square feet per bag is 2.50 bags before rounding, so order 3. Replace 40 with the bag's coverage.
Tips
A 1/4 inch joint is not double a 1/8 inch joint in every chart, but in this geometry the width is a direct multiplier. Depth should be the joint you actually fill, often close to the tile thickness, not the trowel notch.
Equipment
Dengaro finances business equipment from $15,000 to $2 million. The pound total is not the application amount.
Important questions
Bags assume a joint and a density, and they often round. Use their chart when you have it. This page is the geometric volume times the density you type, so you can see the assumption.
Choose thinset and enter the square feet one bag covers at your trowel size. The page divides the area by that coverage and rounds up. It does not know the notch unless you type the coverage.
No. The corner square is included once, because the length used is tile length plus tile width plus the joint width, not twice the corner.
No extra waste percent is applied. If you want leftover, increase the area slightly. The result is the joint volume for the area you entered.
Financing built into the sale