Kitchen Backsplash Tile Calculator
Backsplashes are typically 18 inches tall and run the length of your countertop. Enter your dimensions for an exact tile count, or check the size guide below.
Tile Calculator
Find out how many tiles you need for your project, including waste.
Standard is 10%. Use 15% for diagonal patterns or complex layouts.
You'll need
0 tiles
Enter dimensions to calculate
Measuring for a kitchen backsplash
- Measure the linear length of your countertop in feet.
- For "Width" enter the height of your backsplash (typically 1.5 ft / 18 inches).
- Subtract any large gaps like windows or appliances.
- Add 15% waste for mosaic or pattern tiles, 10% for standard subway tiles.
Standard kitchen backsplash tile sizes
Backsplash tiles come in a wide range of sizes. These are the most common, and what each is best suited for:
| Tile size | Type | Best for |
|---|---|---|
| 3 × 6 inch | Subway | Classic, most popular |
| 4 × 4 inch | Square | Traditional, budget-friendly |
| 2 × 2 inch | Mosaic | Accents, detailed patterns |
| 6 × 6 inch | Square | Larger, fewer grout lines |
| 12 × 24 inch | Large format | Modern, minimal grout |
Standard backsplash heights
Most kitchen backsplashes follow these standards:
- Standard: 18 inches (1.5 ft) — fills the gap between counter and upper cabinets
- Full height: extends to the ceiling — popular for modern kitchens
- Behind stove only: 30 inches tall, width of the stove
Tiles needed for common backsplash sizes
Using 3×6 inch subway tiles (8 per sq ft) with 10% waste, at standard 18-inch height:
| Countertop length | Area | Subway tiles |
|---|---|---|
| 6 ft | 9 sq ft | ~80 tiles |
| 8 ft | 12 sq ft | ~106 tiles |
| 10 ft | 15 sq ft | ~132 tiles |
| 12 ft | 18 sq ft | ~159 tiles |
Frequently asked questions
What is the most popular backsplash tile size?
The 3×6 inch subway tile is the most popular by far. It's affordable, timeless, and works in nearly any kitchen style. The 4×4 inch square tile is a close second for a more traditional look.
How many subway tiles for a 10-foot backsplash?
A 10-foot wide, 18-inch tall backsplash is 15 sq ft. With 3×6 subway tiles (8 per sq ft) and 10% waste, you'll need about 132 tiles.
Should I include outlets and switches in my measurement?
No — but don't subtract them either. Outlet boxes are small enough that the cut tiles often work out to similar coverage. Just stick with your linear measurements.
What size tile makes a small kitchen look bigger?
Larger tiles with fewer grout lines (like 12×24 inch) make a space feel more open. For a small kitchen, large-format tiles or a continuous subway pattern create a clean, uncluttered look.
How much extra tile should I buy for a backsplash?
Add 10% for standard subway layouts and 15% for mosaic, herringbone, or diagonal patterns, which require more cuts. Keep a few spare tiles after the job for future repairs.