How it's calculated
ft² = in² ÷ 144
in² = square inches, ft² = square feet. 1 ft² = 144 in² (12 × 12); reverse with in² = ft² × 144.
Common values
| Square inches | Square feet |
|---|---|
| 144 in² | 1 ft² |
| 288 in² | 2 ft² |
| 432 in² | 3 ft² |
| 1440 in² | 10 ft² |
Common questions
Why 144 and not 12?
A foot is 12 inches, so a square foot is 12 by 12, which is 144 square inches.
How many 12x12 tiles cover a square foot?
Exactly one, since a 12 by 12 inch tile is 144 square inches.