Kitchen Backsplash Tile Calculator
Estimate tile, boxes, grout, thinset, and cost for kitchen backsplash walls, stove areas, outlet-heavy runs, and multi-section layouts.
Last updated: March 23, 2026
Enter Your Measurements
Wall Sections(for L-shaped kitchens)
Quick:
Include materials estimate (thinset, grout)
Enable cost estimate
Results
132
kitchen backsplash tiles needed
Kitchen Wall Area:15 sq ft
Base Tiles:120 tiles
Extra for Waste:+12 tiles
Boxes Needed:~7 boxes (20/box)
Materials Estimate
Thinset:~11 lbs
Grout:~7 lbs
Calculation Steps
Total Area: Sum of all wall sections= 15 sq ft
Tile Area: 3" × 6"= 0.125 sq ft per tile
Base Tiles: 15 sq ft ÷ 0.125 sq ft= 120 tiles
+ 10% Waste: 120 × 1.1= 132 tiles
Privacy First - All calculations in your browser Industry-standard formulas
How to Use This Calculator
- Choose your backsplash height — 18 inches (countertop to cabinets) is the most common. Go taller behind the stove for extra protection.
- Measure your wall sections — Measure the width of each backsplash run in inches. Count stove walls, short return walls, and any area with a different height as separate sections.
- Add multiple sections — Click "Add Section" for L-shaped kitchens or areas with different heights. Toggle sections on/off as needed.
- Pick your tile size — Classic 3×6 subway tiles? Always a safe bet. Larger tiles mean fewer grout lines but more cutting.
- Check your shopping list — The calculator shows tile count, boxes, and optional thinset, grout, and cost estimates for a kitchen install.
How We Calculate
Tiles Needed = (Measured Wall Area ÷ Tile Area) × (1 + Waste%)
Kitchen Example:
- • Main wall: 120" × 18" = 2,160 sq in = 15 sq ft
- • Tile: 3" × 6" = 18 sq in = 0.125 sq ft per tile
- • Base tiles: 15 ÷ 0.125 = 120 tiles
- • With 10% waste: 120 × 1.1 = 132 tiles
Waste Factor for Kitchen Backsplash Work
- • Standard straight layout: 10% waste (outlet cutouts, edges, cabinet ends)
- • Diagonal or herringbone: 15% waste (more cuts)
- • Multiple outlets, windows, or trim breaks: Add extra 5%
Subway Tile Sizes
- • Classic: 3\" × 6\" — 8 tiles/sq ft, most popular
- • Mini: 2\" × 4\" — 18 tiles/sq ft
- • Elongated: 3\" × 12\" — 4 tiles/sq ft
- • Large format: 4\" × 16\" — 2.25 tiles/sq ft
Measure each kitchen wall run separately and use the waste factor to cover outlet cutouts, cabinet ends, and other small openings. Learn more →