Kitchen Tile Calculator

How to Calculate Tiles for Your Kitchen

Kitchen tiling typically covers two areas: the backsplash (the wall between countertops and upper cabinets) and the floor. Each has different dimensions, tile size preferences, and material needs.

Kitchen Backsplash Calculation

A backsplash is usually 55-65cm high (the gap between counter and upper cabinets) and runs the length of your countertop. The calculation is straightforward:

Tiles needed = (Backsplash Length × Height) ÷ Single Tile Area × 1.10

For a standard 3m backsplash that's 60cm high:

• Area = 3 × 0.6 = 1.8 m²
• Using 10×10cm tiles: 1.8 ÷ 0.01 × 1.10 = 198 tiles (round up to 200)
• Using subway tiles (10×20cm): 1.8 ÷ 0.02 × 1.10 = 99 tiles (round up to 100)

Popular Kitchen Tile Sizes and Layouts

Kitchen Floor Tile Calculation

Kitchen floors require the same calculation as any floor: Length × Width, plus waste. However, kitchens often have irregular shapes (L-shaped, island cutouts), so measure in sections:

1. Measure the main rectangular area
2. Add any alcoves or extensions
3. Subtract the island base (if permanently fixed)
4. Add 10-15% waste

Backsplash Materials Checklist

For a 1.8 m² backsplash, you'll typically need:

Kitchen Tile Considerations

Kitchens have unique demands on tile and grout:

Heat resistance — The area behind your hob or range is exposed to heat and grease splatter. Porcelain and ceramic tiles handle this easily. The real concern is the grout — use epoxy grout behind the stovetop as it resists grease staining.

Stain resistance — Kitchens generate oil, wine, coffee, and food stains. Choose tiles with low porosity (porcelain is best) and stain-resistant grout. Glossy-finish tiles wipe clean more easily than matte.

Cleaning ease — Larger tiles with narrow grout lines are the easiest to clean. Every grout line is a potential dirt trap. If using small-format tiles, seal the grout after installation.

DIY Kitchen Backsplash: Step by Step

A kitchen backsplash is one of the best beginner tiling projects because the area is small, the tiles are lightweight, and imperfections are less noticeable at counter height.

1. Prepare the surface — Clean the wall, fill any holes, and apply a primer if the wall is dusty or porous.
2. Plan your layout — Dry-fit a row of tiles along the countertop to determine your starting point. Centre the layout so edge cuts are equal on both sides.
3. Apply adhesive — Spread wall tile adhesive with a notched trowel. Work in sections of 0.5 m² at a time so the adhesive doesn't dry out.
4. Place tiles — Press each tile firmly into the adhesive with a slight twist. Use spacers between tiles for even grout lines.
5. Cut tiles — A manual tile cutter handles straight cuts. Use tile nippers for notches around outlets and pipes.
6. Grout — After the adhesive has set (24 hours), apply grout with a rubber float, pressing it into the joints diagonally.
7. Seal and finish — Apply silicone sealant where the backsplash meets the countertop and at any inside corners.

Cost Comparison: Kitchen Tiling Options

When to Hire a Professional

A kitchen backsplash is a manageable DIY project for most people. However, consider hiring a professional for kitchen floor tiling (proper substrate preparation is critical), large-format tiles (60cm+), complex patterns, or if your countertop has an L-shape with many cuts needed.