Tile Square Foot Calculator
Work out the square footage of tile a room needs — in square feet, square metres and square yards — and how many tiles that means once cutting waste is added.
Tile is sold by area, but rooms are rarely a neat rectangle of whole tiles. This calculator gives you the honest number: the exact area of the room in the units your supplier uses, and the number of tiles that area turns into once cutting waste is counted.
Use it when comparing quotes, checking a supplier's figure, or converting a US quote in square feet into square metres for a UK or Australian supplier.
Your results
Enter your measurements and press Calculate.
Quantities are rounded up to whole tiles, planks, boxes or bags, after the wastage allowance. Cost appears only when you enter a price.
Formula
All lengths are converted to a single unit before the calculation: 1 ft = 0.3048 m, 1 in = 25.4 mm, 1 ft² = 0.09290304 m², 1 yd² = 9 ft². Material quantities are rounded up — you cannot buy part of a tile, plank or bag.
How to use this calculator
- Measure the length and width of the area to be tiled.
- Choose your tile size — the calculator converts it to square feet automatically.
- Add a wastage allowance (10% standard).
- Add a price per square foot if you want a cost estimate.
Worked example
| Room | 15 ft × 12 ft = 180 ft² |
|---|---|
| In metric | 180 × 0.09290304 = 16.72 m² |
| In square yards | 180 ÷ 9 = 20 yd² |
| Tile | 12 in × 12 in = 1 ft² per tile |
| Tiles with 10% wastage | ⌈180 × 1.10⌉ = 198 tiles |
Check it by hand: every step above uses the formula in the box. If your numbers match the example inputs but the calculator gives a different answer, please report it via the contact page.
Frequently asked questions
What is the difference between this and the tile calculator?
This page is for area first: it answers “how many square feet of tile do I need?” and converts between sq ft, sq m and sq yd. The tile calculator is for tile counts and boxes when you already know your tile size and want a shopping list.
How do I convert square feet to square metres?
Multiply square feet by 0.09290304. So 180 ft² × 0.09290304 = 16.72 m². This calculator does the conversion for you in both directions.
How many square feet are in a square yard?
9. A square yard is 3 ft × 3 ft, so divide square feet by 9 to get square yards. Carpet is usually sold by the square yard; tiles are usually sold by the square foot or by the box.
Do I need to add wastage to the square footage?
Yes. The square footage of the room is not the square footage to buy — cuts around edges, corners and obstacles consume extra tiles. The tile count and the cost estimate here include your wastage allowance; the bare room area is shown separately so you can see both.
Related calculators
Estimates only. Results are for planning. Measure twice, confirm box coverage and tile sizes on the packaging you buy, and follow the manufacturer's instructions. See the disclaimer.