Tile for a Kitchen Backsplash
Free calculator with pre-filled dimensions • Updated March 2026
A standard 12-foot kitchen backsplash (18" tall) needs about 18 sq ft of tile — roughly 276 subway tiles (3×6") with 15% waste.
Open calculator with these dimensions →Kitchen Backsplash Tile Guide
A kitchen backsplash runs between the countertop and upper cabinets, typically 18 inches tall. For a 12-foot run of countertop, you need approximately 18 square feet of tile. This is one of the most impactful kitchen upgrades, costing as little as $50 in materials for subway tile.
Tile Options and Quantities
| Tile Type | Quantity (18 sq ft) | Material Cost |
|---|---|---|
| Subway (3×6") | ~276 tiles (15% waste) | $35–$90 |
| Mosaic sheets (12×12") | ~21 sheets | $100–$250 |
| Large format (12×24") | ~12 tiles | $60–$180 |
| Peel-and-stick | ~21 sheets | $50–$120 |
Pro Tips
- Start from the center of each wall section. This ensures cut tiles at both ends are the same size, creating a symmetrical look. Mark the center, dry-lay tiles outward, and adjust if the end cuts would be less than half a tile.
- Use unsanded grout for joints under 1/8". Subway tile with tight joints needs unsanded grout. It gives a cleaner look and is easier to clean in the kitchen.
- Account for outlets and switches. Each outlet requires an L-shaped or U-shaped tile cut. Budget 15% waste for backsplashes because of all the small cuts around outlets, corners, and cabinet edges.
Frequently Asked Questions
How many subway tiles for a kitchen backsplash?
For a standard 12-foot backsplash that is 18 inches tall (18 sq ft), you need about 240 subway tiles (3×6") plus 15% waste, totaling roughly 276 tiles or about 3 boxes of 100.
How much does a kitchen backsplash cost?
DIY subway tile backsplash: $50–$150 in materials. Mosaic or designer tile: $150–$400. Professional installation adds $300–$700 in labor. Total professional installation: $400–$1,100.