Tile Calculator — Free Online Tile Calculator
Calculate how many tiles and boxes you need for any floor or wall. 100% free, no signup.
Tiles needed (incl. waste)
0
Floor area0 ft²
Tiles (no waste)0
Recommended extra0
How to calculate how many tiles you need
Multiply your room's width by its length to get the floor area in square feet, then divide by the area of one tile. Always add 10% for cuts, breakage and future repairs — more for diagonal or herringbone layouts.
- Measure the room width and length.
- Pick your tile size.
- Add 10–15% waste.
Redesign the whole room, not just the numbers
RoomGPT shows you the finished look on a photo of your space. Download free.
See how it works
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Frequently asked questions
How much extra tile should I buy?
Add 10% for a standard straight layout, and 15–20% for diagonal, herringbone or patterned layouts where cuts produce more offcuts.
Does this work for walls too?
Yes — enter the wall height and width instead of room dimensions to estimate wall tiles.
Want to see the finished look?
Download RoomGPT free and preview new tile and flooring styles on a photo of your real room before you buy.