Shower Tile Calculator
Enter the shower's wall widths and height, an optional niche and the floor, and get wall tile and floor tile as two separate counts in boxes, with a waste allowance you can change.
A ready-made setup of the Tile Calculator.
Estimates for planning, not professional advice. Read the full notice.
Example: a shower stall
6 12x24 tile, box
- Wall area to tile 88 ft²
- Floor area to tile 15 ft²
- Wall tiles with waste 48 tiles
- Floor tiles with waste 17 tiles
- Floor tile, by the box 2 × 12x12 tile, box
Estimate for planning, from what you entered and the product data shown. Check product labels and your supplier before you buy.
Your project
Enter a size to see your total.
Each product is rounded up once for the whole project, so the total can be less than the items bought alone added together. A line counted from a cut layout (sheets, boards or tiles laid out piece by piece) is counted for each item and added.
Shopping list
| Item | Size | Buy |
|---|---|---|
| Wall tile, by the box | 12x24 tile, box | 6 |
| Floor tile, by the box | 12x12 tile, box | 2 |
Save on this device
Saved projects
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Worked example: a shower stall
Show the working
- Wall width in all 5 ft + 3 ft + 3 ft = 11 ft
- Wall area: width times height 11 ft × 8 ft = 88 ft²
- Floor area: length times width 5 ft × 3 ft = 15 ft²
- Wall tiles with the joint and waste, rounded up once 88 ft² = 48 tiles
- Wall boxes, rounded up once 48 tiles ÷ 8 = 6 × 12x24 tile, box
Assumptions
The figures behind the example. Sourced figures link to their source below; a default is a starting value to check against your label or supplier.
| Assumption | Value | Details and changes |
|---|---|---|
| Tile waste allowance | 10% | |
| Default A typical allowance, not a figure from a standard; check your label or supplier. Change it to the allowance you want. | ||
| Grout joint width | 0.125 in | |
| Default Your own grout joint; check the spacing on your tile label or supplier. | ||
| Tiles per box | 8 tiles | |
| Default Tiles per box is on your tile label or supplier's sheet; the list below offers common counts. | ||
Feet and inches, like 12' 6"
What a niche adds to the wall tile
Wall area and wall tiles for the example shower with a niche of each size, worked out on their own
| Niche (width, height, depth) | Area the niche adds | Wall area | Wall tiles |
|---|---|---|---|
| 12x24x4 | 2 ft² | 90 ft² | 49 |
| 12x36x4 | 2.67 ft² | 90.67 ft² | 50 |
| 16x24x4 | 2.22 ft² | 90.22 ft² | 49 |
| 24x24x6 | 4 ft² | 92 ft² | 50 |
The opening comes off the wall and the niche's back, two sides, top and bottom go on, so the niche adds its sides, top and bottom.
Questions
Do I tile the inside of the niche?
If you give the niche's width, height and depth, the calculator counts its back, two sides, top and bottom as tile and takes the opening off the wall. Leave the niche empty and the wall is counted as one flat surface.
Why are wall tile and floor tile counted separately?
They are usually different tiles with different sizes and boxes, so each gets its own area, its own waste allowance applied once and its own box count. Both counts are in the result and in the shopping list.
Does the box count include the niche?
Yes, when you fill in the niche. The table shows the wall area and wall tiles for four niche sizes so you can see what each adds.