🧱 Tile & Flooring Calculator

This tile and flooring calculator works out how many tiles — and how many boxes — you need to cover a room, based on your room dimensions, individual tile size, and a waste allowance for cuts, breakage, and pattern matching. It's designed for homeowners and contractors planning a flooring or wall tile project who want an accurate material estimate before ordering.

How It Works

The calculator multiplies room length by room width to get the total floor (or wall) area, then divides that by the area of a single tile to find the base number of tiles required. It adds your chosen waste percentage — typically 10% for straightforward layouts — to account for tiles that get cut at edges or broken during installation, then rounds up to a whole tile. If you enter how many tiles come in a box, it also divides the total tile count by that number and rounds up to the number of boxes to buy.

Why It Matters

Ordering too few tiles risks a project delay if the exact batch or dye lot isn't available when you go back for more — tile colors can vary slightly between production runs. Ordering too many wastes money. A clear tile and box count, with a sensible waste buffer built in, helps you order the right amount the first time.

Tips for Accurate Results

• Increase the waste percentage to 15-20% for diagonal layouts, herringbone patterns, or rooms with lots of corners and cutouts.
• Measure your room in sections if it's an irregular shape, and sum the areas before dividing by tile size for a more accurate count.
• Check the tile box for the exact tiles-per-box count rather than assuming — it varies by tile size and manufacturer.
• Buy from the same dye lot/batch number where possible, since tile color and shade can vary slightly between production runs.