Stone Floor Calculator
Tile count, thin-set, and grout for natural stone.
Inputs
sq ft
in
in
in
in
%
Results
Tiles needed
97
Boxes needed
25
Thin-set mortar6 bags (50 lb)
Grout3 bags (25 lb)
Stone sealer2 qt
Total stone weight2,640 lbs
How to Use This Calculator
- Enter the total floor area in square feet.
- Enter the stone tile width and length in inches.
- Set the grout joint width in inches (1/16 inch for rectified, 1/8 inch standard, up to 3/16 inch rustic).
- Enter your waste factor (10% straight, 15% diagonal, 20% complex patterns).
- Review the tile count, grout quantity in pounds, and recommended order quantity.
How the result changes with Room area
| Room area | Tiles needed | Boxes needed |
|---|---|---|
| 5,009 | 2,416 | 604 |
| 17,507 | 8,442 | 2,111 |
| 32,504 | 15,673 | 3,919 |
| 45,001 | 21,699 | 5,425 |
What each input means
- Room area
- Total floor area to tile.
- Tile width
- Width of each stone tile.
- Tile length
- Length of each stone tile.
- Tile thickness
- Stone tile thickness (3/8" standard, up to 3/4" for thick-set).
- Grout joint width
- Joint width: 1/16" rectified, 1/8" standard, 3/16" rustic.
- Waste factor
- 10% straight lay, 15% diagonal, 20% herringbone/pattern.
What each result means
- Tiles needed
- Total stone tiles including waste.
- Boxes needed
- Boxes to purchase.
- Thin-set mortar
- 50 lb bags of thin-set mortar.
- Grout
- 25 lb bags of sanded grout.
- Stone sealer
- Penetrating sealer (2 coats at 200 sq ft/qt).
- Total stone weight
- Approximate weight of all stone tiles (check subfloor capacity).
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersRoom area = 200, Tile width = 18, Tile length = 18, Tile thickness = 0.375 = 6 input(s) provided
- Calculate Tiles neededTiles needed97 = 97
- Calculate Boxes neededBoxes needed25 = 25
- Calculate Thin-set mortarThin-set mortar6 = 6
- Calculate GroutGrout3 = 3
Engine last updated .
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