Convert Square Inch to Square Foot
Use this free converter to change square inches (in²) into square feet (ft²). Square inch and square foot both measure area. As a quick reference, 1 in² equals 0.0069444444 ft², and 1 ft² equals 144 in².
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Square Foot (ft²)
0.0069444444
1 in² = 0.0069444444 ft²
Area conversion table
| Square Inch | Square Foot |
|---|---|
| 0.01 | 0.000069444444 |
| 0.1 | 0.00069444444 |
| 0.5 | 0.0034722222 |
| 1 | 0.0069444444 |
| 2 | 0.013888889 |
| 3 | 0.020833333 |
| 5 | 0.034722222 |
| 10 | 0.069444444 |
| 20 | 0.13888889 |
| 25 | 0.17361111 |
| 50 | 0.34722222 |
| 100 | 0.69444444 |
| 1,000 | 6.9444444 |
How to convert Square Inch to Square Foot
Multiply the square inch value by 0.0069444444 to get square feet.
- Enter the number of square inches you want to convert.
- The converter instantly shows the equivalent value in square feet.
- Worked example: 15 in² × 0.0069444444 = 0.10416667 ft².
- Use the swap button to reverse the conversion (square foot to square inch).
About these units
Square Inch (in²)
- Definition
- A square inch (in²) is the area of a square one inch on each side, exactly 6.4516 square centimeters.
- History
- It follows from the inch in the imperial system.
- Current use
- Square inches measure small areas such as print, screens, and material samples.
Square Foot (ft²)
- Definition
- A square foot (ft²) is the area of a square one foot on each side, about 0.093 square meters.
- History
- It derives from the foot and is deeply embedded in US and UK property practice.
- Current use
- Square feet are the standard unit for real-estate floor area in the US and UK.
Frequently asked questions
How many square feet are in a square inch?
There are 0.0069444444 ft² in 1 in². To convert, multiply the number of square inches by 0.0069444444.
How do I convert square inches to square feet?
Multiply the square inch value by 0.0069444444 to get square feet. For example, 10 in² = 0.069444444 ft².
Is this square inch-to-square foot converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Square Inch to other area units
| Unit | 1 Square Inch equals |
|---|---|
| Square Meter (m²) | 0.00064516 m² |
| Square Kilometer (km²) | 6.4516e-10 km² |
| Square Centimeter (cm²) | 6.4516 cm² |
| Square Mile (mi²) | 2.4910e-10 mi² |
| Square Yard (yd²) | 0.00077160494 yd² |
| Square Foot (ft²) | 0.0069444444 ft² |
| Acre (ac) | 1.5942e-7 ac |
| Hectare (ha) | 6.4516e-8 ha |