Square Foot to Square Inch (ft² to in²)
Convert ft² to in² — Area converter
Also written as ft2 to in2.
One square foot equals 144 in², so to convert square feet to square inches you multiply the value by 144. A square foot is larger than a square inch — going the other way, 1 in² = 0.0069444444 ft². For example, 10 ft² = 1440 in² and 50 ft² = 7200 in².
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1 ft² = 144 in²
Square Foot to Square Inch formula
1 Square Foot = 144 in²
Worked examples
- 25 ft² = 3600 in²
- 100 ft² = 14400 in²
Square Foot to Square Inch conversion table
| Square Foot (ft²) | Square Inch (in²) |
|---|---|
| 1 | 144 |
| 2 | 288 |
| 3 | 432 |
| 5 | 720 |
| 8 | 1152 |
| 10 | 1440 |
| 12 | 1728 |
| 15 | 2160 |
| 20 | 2880 |
| 25 | 3600 |
| 50 | 7200 |
| 100 | 14400 |
| 250 | 36000 |
| 500 | 72000 |
| 1000 | 144000 |
Frequently asked questions
How many square inches are in one square foot?
One square foot equals 144 square inches (in²).
How many square feet are in one square inch?
One square inch equals 0.0069444444 square feet (ft²).
How do you convert square feet to square inches?
1 Square Foot = 144 in². Use the calculator above for any value.
What is 5 ft² in in²?
5 ft² = 720 in².
What is 100 ft² in in²?
100 ft² = 14400 in².
What is 10 ft² in in²?
10 ft² = 1440 in².
What is 20 ft² in in²?
20 ft² = 2880 in².
Is a square foot bigger than a square inch?
Yes. A square foot is larger — one square foot equals 144 square inches (in²).