Tile Calculator

Room size and tile dimensions — exactly how many tiles to buy.

ft
ft
in
in
%
$
Tiles needed
199
Room area
180.0 sq ft
Estimated cost
$497.50

A 10% waste factor is standard for simple layouts; diagonal patterns, intricate cuts, or a first-time DIY job often warrant 15-20% instead.

A worked example

A 200 sq ft room tiled with standard 12×12 inch tiles, plus a 10% waste factor, needs 221 tiles.

Frequently asked questions

Why include a waste factor at all?

Cutting tiles to fit room edges, corners, and obstacles always produces some unusable offcuts — a waste factor builds that loss into the order so you don't run short partway through installation.

Should I round up or down on the final tile count?

Always round up — buying one extra tile is a minor cost, while running short mid-project (especially with a dye-lot match issue on a reorder) can be a much bigger headache.