Tile Calculator
Enter your room and tile dimensions to calculate exactly how many tiles and boxes you need to buy, including a waste buffer for cuts.
Room dimensions (meters)
Tile size (centimeters)
A 10% waste buffer covers straight cuts. Increase to 15-20% for diagonal layouts, herringbone patterns, or rooms with many corners.
Frequently asked questions
How do I calculate how many tiles I need?
Divide the room's area by the area of one tile, then add a waste buffer (usually 10%) to cover cuts and breakage. For example, a 12 m² room with 30×30 cm tiles (0.09 m² each) needs about 133 tiles before waste, or roughly 147 with a 10% buffer.
How much extra tile should I buy for waste?
Most contractors recommend 10% extra for a straight, grid-aligned layout. Increase to 15-20% for diagonal layouts, herringbone patterns, small or oddly-shaped rooms, or if the tiles have a pattern that needs matching across pieces.
How do I estimate the cost of tiling a room?
Multiply the number of tiles needed (including waste) by the price per tile, then add grout, adhesive, and labor if you're hiring a professional. Tile alone typically runs from a few dollars per square foot for basic ceramic to $15+ for natural stone or designer porcelain.
Do I need to know the room's exact shape to use this calculator?
This calculator assumes a rectangular room. For L-shaped or irregular rooms, split the floor plan into rectangular sections, run the calculator for each section separately, and add the results together.
See how your new tile floor looks before you buy a single box.
Preview with AI