Tile Calculator

Estimate the number of tiles required for a floor or wall.

Tile Calculator helps you how many tiles you need from room size and tile size, with waste. Enter room length, room width, tile length, tile width, and waste, review the breakdown, and use the guidance below to understand what the number means — and what it does not. What the Tile calculator does Tile Calculator is built for materials, areas, volumes, and jobsite estimates. How many tiles you need from room size and tile size, with waste. You enter room length, room width, tile length, tile width, and waste, then Simple Calculators computes the result instantly. Formulas match common contractor and DIY references for rectangular and simple shapes. How the math works Room area ÷ area of one tile, then add waste. US: one tile in ft² = length × width in inches ÷ 144. Metric: one tile in m² = length × width in cm ÷ 10,000. The formula: Tiles = room area ÷ area of one tile × (1 + waste). US: one tile in ft² = length × width in inches ÷ 144. Metric: one tile in m² = length × width in cm ÷ 10,000.