A kitchen backsplash is one of the most visible upgrades you can make, and getting the tile count and cost right helps you budget accurately. This calculator covers materials and estimated cost for any backsplash layout.
Backsplash Area
ft
in
Tile Size
in
in
Cost & Waste
$
%
Scenario: You're tiling a 10 ft wide backsplash, 18 inches tall, with 3x6 subway tiles at $8 per sq ft and 15% waste.
Result: Area: 10 x 1.5 = 15 sq ft. With 15% waste: 17.25 sq ft. Tiles: 138 subway tiles. Estimated cost: $138.
Materials run $3-$30 per sq ft depending on tile type. A typical 30 sq ft backsplash costs $100-$300 for basic subway tile, $300-$600 for mid-range options, or $600-$1,500 for premium materials like natural stone or glass mosaic. Add $300-$800 for professional installation.
Divide the total backsplash area (sq ft) by the area of one tile (sq ft). A 3x6 inch subway tile covers 0.125 sq ft each, so 15 sq ft needs 120 tiles before waste. Add 15% for cuts and waste, especially around outlets and corners.
Standard height is 18 inches (from countertop to bottom of upper cabinets). Full-height backsplash to the ceiling is a popular design choice that costs more material but creates a dramatic look. Behind the range, many codes require backsplash material.
Yes, tile can go directly over painted drywall if it's in good condition. Clean the wall, lightly sand for adhesion, and apply thinset mortar. Do not tile over wallpaper -- remove it first. Use cement board behind the range if the manufacturer requires it.
Want to learn more before you start your project?
Read the full guide →
All Calculators
