Shower Tile Calculator
Find the total tile area needed for your shower walls, including a waste allowance for cuts, by entering the dimensions of up to three separate wall panels.
Result
105.6 sq ft
These shower walls need about 105.6 sq ft of tile
Quick Answer
A shower tile calculator adds the areas of your shower walls together, then multiplies by a waste factor to account for cuts and breakage. For three walls measuring 20, 15, and 15 sq ft respectively with 10% waste, the total tile area is (20 + 15 + 15) × 1.10 = 55 sq ft of tile to purchase.
How a Shower Tile Calculator Works and What It Outputs
Two mistakes account for most shower tile shortfalls: treating irregular wall panels as one combined measurement, and forgetting to add extra for cuts. Entering each shower wall area separately handles walls of different heights and widths without combining measurements first. The tool sums the walls and applies a waste percentage, giving a purchase quantity that includes a buffer for breakage and trimming. Getting this number right before buying prevents a short delivery that stops the project mid-wall.
The Formula Behind Any Shower Tile Area Calculation
Total wall area (sq ft) = wall 1 area + wall 2 area + wall 3 area Order area (sq ft) = total wall area × (1 + waste % ÷ 100)
- Total wall area (sq ft) = wall 1 area + wall 2 area + wall 3 area
- Order area (sq ft) = total wall area × (1 + waste % ÷ 100)
Enter Wall Areas And Get Your Shower Tile Order Total
Inputs
- Wall 1 area (sq ft): height × width of the first wall in feet, calculated before entry
- Wall 2 area (sq ft): area of the second wall, left blank if only two walls need tiling
- Wall 3 area (sq ft): area of the third wall, left blank if not applicable
- Waste % (%): buffer for cuts and breakage; 10% is standard, 15% for angled patterns
Steps
- Measure each shower wall's height and width in feet.
- Multiply height × width for each wall to get its area.
- Enter each wall area into the corresponding field.
- Set the waste percentage based on your tile pattern.
- Read the total tile order area in the result field.
Shower Tile Calculator Applied To Real Measurements
A three-wall shower enclosure with Wall 1 = 20 sq ft, Wall 2 = 15 sq ft, Wall 3 = 15 sq ft, and a 10% waste allowance.
- Sum individual wall areas: 20 + 15 + 15 = 50.00 sq ft.
- Apply 10% waste allowance: 50.00 × (1 + 10 ÷ 100) = 55.00 sq ft.
Order 55 sq ft of tile. Round up to the nearest full box using the coverage figure on the packaging.
When To Use a Shower Tile Calculator (And When Not To)
Use this calculator when planning a new shower build or a full re-tile, before buying tile. It gives you a consistent reference area for comparing prices across suppliers. Do not use it as your sole reference for mosaic or large-format tile with mandatory continuous grout lines. Pattern alignment can push waste higher than the standard 10 to 15% range.
Assumptions
- Wall area inputs are entered in sq ft, pre-calculated as height × width before entry.
- The waste factor is applied uniformly across all walls. Adjust manually if one wall has a complex pattern.
- Small cutouts (niches, fixtures) are not subtracted; the cut material offsets the apparent saving.
- The result is a purchase quantity. Round up to the nearest full box using the per-box coverage on the label.
Limitations
- Does not calculate floor tile area; measure the shower floor separately.
- Does not account for grout line width or tile size, which affect box yield in some large-format tile installations.
- Does not convert the order area to a number of boxes; divide the result by the sq ft per box shown on the packaging.
- Does not factor in pattern-specific directional waste beyond the waste percentage entered.
In Practice
The most frequent ordering mistake on shower tile jobs is measuring wall height to the ceiling instead of to the top of the tiled area. If your tile stops at a border or accent strip below the ceiling, measure only to that height. Buying to ceiling height when only 80% of the wall gets tiled adds unnecessary cost to every wall in the shower.
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Frequently Asked Questions: Shower Tile Calculator
How much tile do I need for a shower with three walls?
Add the square footage of each wall together and multiply by a waste factor. For three walls totaling 50 sq ft with 10% waste, the order quantity is 50 × 1.10 = 55 sq ft. Divide that figure by the square footage per box shown on the tile packaging to find the number of boxes to buy.
What waste percentage should I use for shower tile?
Use 10% for straight, horizontal, or vertical tile layouts in a standard shower. Use 15% for diagonal or herringbone patterns, where each tile requires an angled cut at the wall edges and corners. Beginners who have not cut tile before may want 15 to 20% to account for breakage during practice cuts.
Should I subtract the area of my shower niche or fixtures?
No. Leave niche, showerhead, and soap dish areas in your total. The cuts you make to fit tile around these features use up the tile material that would otherwise cover that area, so subtracting them leads to short orders.
Is the shower tile calculator the same as a floor tile calculator?
The formula is the same, but shower walls and floors are separate areas. Measure them separately, enter each into the calculator independently, and add the results when building your total order. Floor tile often uses a higher waste factor because diagonal cuts at both the wall edges and any drain angles increase trim waste.
How do I use the area if I measured in inches?
Multiply height in inches by width in inches to get area in square inches, then divide by 144 to convert to square feet. For a wall 60 in tall × 48 in wide: (60 × 48) ÷ 144 = 20 sq ft, which you then enter into the wall area field.
Sources
Last updated: . Reviewed for accuracy against the formula shown above.