Measuring a backsplash — width times the band height, minus only the big openings
Measure each run as width (ft) × band height (in) ÷ 12. The standard band is 18″ counter-to-cabinet. Deduct only large openings (≥1 sq ft); tile around outlets. Then add the pattern waste factor.
What this diagram shows
A kitchen wall elevation showing how to measure a tile backsplash. The backsplash is the band between the countertop and the upper cabinets, a standard 18 inches tall. Each run is measured as its width in feet times the height in inches divided by twelve to get square feet; a 10-foot run at 18 inches is 15 square feet. Large openings such as a window or a range alcove that are at least one square foot are deducted, but small electrical outlets under one square foot are NOT deducted — you tile around them and the waste factor absorbs the cuts. The net area is then multiplied by one plus the pattern waste factor.
Backsplash Tile Calculator
Instantly calculate backsplash tiles, grout bags, thinset & trim for ceramic, glass, marble & mosaic. TCNA/ANSI formulas. Free, no signup needed.
Related diagrams
- Tile, Grout & Mortar
How trowel notch size sets the mortar bed and the coverage per bag
- Tile, Grout & Mortar
Thinset contact coverage — why combed ridges must be collapsed (80% / 95% rule)
- Tile, Grout & Mortar
How tile layout pattern drives waste — straight ≈7%, diagonal & herringbone ≈15%
- Tile, Grout & Mortar
Large-format tile offset limit — stagger ≤33%, not 50%, to avoid lippage
- Tile, Grout & Mortar
What goes behind shower tile — cement board, waterproofing membrane, then tile