Buying the right number of tiles for a floor or wall project means converting your area into square footage, figuring out how much area a single tile covers, and adding a waste allowance for cuts around edges and any breakage.
This calculator takes your area's length and width plus your chosen square tile size in inches, calculates how many tiles fit into that area, and adds your specified waste percentage before rounding up to the final tile count to buy.
A 10% waste factor is a reasonable standard for straightforward rectangular rooms, but more complex layouts, diagonal tile patterns, or rooms with many corners and cutouts often benefit from a higher waste allowance, sometimes 15-20%.
Because everything runs locally in your browser, results appear instantly and nothing you type or upload is ever sent to a server.
Bookmark this page if you expect to use this tool regularly — it loads fast and behaves the same way every time, with no account needed.
This kind of task shows up constantly in everyday writing, coding, design, and admin work, which is exactly why a dedicated, focused tool saves so much back-and-forth.
A tool that does one job well, without a cluttered interface or unrelated features competing for attention, tends to be faster to use than a heavier all-in-one app.
If you find yourself needing this often, keeping this page open in a tab is usually faster than digging through a bigger software suite's menus.
Frequently asked questions
Why do larger tiles sometimes waste more material than smaller ones?
A single cut tile for an edge or corner wastes the same proportion regardless of tile size, but larger tiles mean each waste cut discards more total material, so waste factors sometimes scale up slightly with tile size.
Should I buy tiles from the same production batch?
Yes, tile color and shade can vary slightly between production batches (called a "lot"), so buying enough tiles from a single lot in one purchase helps avoid a visible mismatch.