How it works
Determine the number of tiles needed for your flooring project, including a waste factor.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
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?roomLength=Room Length (ft)Number · Optional · Default: 10
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?roomWidth=Room Width (ft)Number · Optional · Default: 12
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?tileLength=Tile Length (in)Number · Optional · Default: 12
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?tileWidth=Tile Width (in)Number · Optional · Default: 12
Outputs
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resultResultText · Primary output
result contains the calculator’s complete rendered result area, including its visible result cards, tables, charts, and messages.
Estimate the number of tiles and total area for your flooring or wall project
Description
The Tile Calculator is a practical utility for homeowners and renovation professionals. When tiling a floor or backsplash, you need to calculate the area of the room and the area of an individual tile to determine the total count. This tool handles the units (feet for rooms, inches for tiles) and automatically includes a 10% waste factor to ensure you have enough material to cover cuts and occasional breakages.
Inputs
- Room Length & Width (ft): The dimensions of the floor or wall area.
- Tile Length & Width (in): The dimensions of a single tile (e.g., 12x12, 3x6).
Outputs
- Tiles Needed: The total number of individual tiles to purchase.
- Total Area: The calculated surface area in square feet (sq ft).
Chart
- N/A: This tool provides precision numeric construction results.
“Good to Know”
- The Waste Factor: Why 10%? You will almost always have to cut tiles to fit against walls or corners. These “off-cuts” often cannot be used elsewhere, so you must buy extra. For complex patterns like “Herringbone,” you might even need 15-20% extra.
- Grout Lines: This calculator provides a close estimate. In real-world applications, grout lines (the space between tiles) slightly reduce the number of tiles needed, but the 10% waste buffer usually compensates for this.
- Batch Matching: Always try to buy all your tiles at once. Tiles produced in different “dye lots” can have subtle color differences.
Examples
Example 1: Standard Bathroom Floor
- Input: 5 ft x 8 ft Room, 12 in x 12 in Tile
- Output: 44 Tiles (40.0 sq ft)
Example 2: Kitchen Backsplash
- Input: 10 ft x 2 ft Area, 3 in x 6 in Tile
- Output: 176 Tiles (20.0 sq ft)
Example 3: Large Patio
- Input: 15 ft x 20 ft Room, 24 in x 24 in Tile
- Output: 83 Tiles (300.0 sq ft)