Tile Calculator
Tiles for an area.
Tiles for an area.
How to use Tile Calculator
- Enter the area length and width in feet or meters
- Set your tile size in centimeters and a waste allowance
- Add optional tiles-per-box to get total tiles and boxes needed
About Tile Calculator
The Tile Calculator tells you how many tiles a floor or wall project needs before you shop. Enter your area's length and width in feet or meters, the tile size in centimeters, and a waste allowance, and it returns the total square footage, the area of a single tile, and the number of tiles required — always rounded up so you never run short mid-job. Because it handles both floor and wall layouts, it works just as well for a shower surround, backsplash, or feature wall as it does for a whole room.
If you already know your space in square feet, the length-by-width inputs give you that area directly, then divide it across your chosen tile size. Add the tiles-per-box figure printed on the packaging and it also tells you how many full boxes to buy. The default 10% waste covers standard grid layouts; bump it to 15-20% for diagonal, herringbone, or shower jobs with lots of cuts around corners and fixtures.
The calculator sizes the material, not the labor — to estimate tile installation cost, take the tile and box totals it gives you and multiply by your local price per tile plus your tiler's rate per square foot. It is completely free with no sign-up, and every calculation runs in your browser, so nothing you enter is uploaded, saved, or shared.
Frequently asked questions
- Is the tile calculator free to use?
- Yes, it is completely free with no sign-up, account, or limits. Use it as many times as you like for any tiling project.
- How many tiles do I actually need?
- Tiles needed = your floor area including the waste allowance, divided by the area of one tile, then rounded up. The default 10% waste covers cuts and breakage; increase it to 15-20% for diagonal or herringbone patterns.
- How do I calculate tiles by square feet?
- Enter the room's length and width and the calculator works out the total square footage automatically, then divides that area by the size of one tile to give the number of tiles. You don't need to convert to square feet by hand — just type the raw measurements and read off both the area and the tile count.
- Can I use this to calculate shower or wall tiles?
- Yes. It works for wall tiles the same way it does for floors — enter the width and height of the wall or shower surround instead of the room's floor dimensions. For showers with niches, corners, and cuts around fixtures, raise the waste allowance to around 15% so you don't run short.
- How do I calculate tile installation cost?
- This calculator sizes the job by giving you the exact tile and box counts. To turn that into an installation cost, multiply the tiles needed by your price per tile, add adhesive and grout, then add your tiler's labor rate, which is usually charged per square foot. The square footage shown here is the number contractors quote against.
- How do I calculate the number of boxes to buy?
- Enter the tiles-per-box count shown on the tile packaging. The calculator divides the total tiles needed by that figure and rounds up to give you the number of full boxes to purchase.
- How much waste should I add for tiles?
- A 10% allowance is standard for straight, grid-style layouts. For diagonal, herringbone, or rooms with many corners and cuts, use 15-20% so you have enough tiles to finish and a few spares for repairs.
- Why do I enter the room in feet or meters but tiles in centimeters?
- Rooms are usually measured in feet or meters, while tile sizes are printed in centimeters on the packaging. The calculator converts everything to square meters internally so the numbers line up correctly.
- Is my data uploaded or stored anywhere?
- No. Every calculation happens locally in your browser. Your measurements are never sent to a server, saved, or shared, so your project details stay private.