Square Inch to Square Foot Converter
Convert Square Inch (in²) to Square Foot (ft²) instantly. 1 in² = 0.006944 ft².
Area Converter
20 units available
1 in² = 0.006944 ft²
Formula:
ft² = in² × 0.0069444444With your value: 1 in² = 0.00694444 ft²
How big is that?
Everyday references on a logarithmic scale, all expressed in square inch so you can sanity-check the result.
Other Square Inch to Square Foot conversions
Square Inch to Square Foot Conversion Table
| Square Inch (in²) | Square Foot (ft²) |
|---|---|
| 0.5 | 0.003472 |
| 1 | 0.006944 |
| 2 | 0.013889 |
| 5 | 0.034722 |
| 10 | 0.069444 |
| 15 | 0.104167 |
| 20 | 0.138889 |
| 25 | 0.173611 |
| 50 | 0.347222 |
| 100 | 0.694444 |
| 250 | 1.736111 |
| 500 | 3.472222 |
| 1000 | 6.944444 |
Square Foot to Square Inch Conversion Table
| Square Foot (ft²) | Square Inch (in²) |
|---|---|
| 0.5 | 72 |
| 1 | 144 |
| 2 | 288 |
| 5 | 720 |
| 10 | 1,440 |
| 15 | 2,160 |
| 20 | 2,880 |
| 25 | 3,600 |
| 50 | 7,200 |
| 100 | 14,400 |
| 250 | 36,000 |
| 500 | 72,000 |
| 1000 | 144,000 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Square Inch (in²)
Area
Derived from the square metre via the length definitions above.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Square Foot (ft²)
Area
Derived from the square metre via the length definitions above.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Square Inch to Square Foot
To convert from Square Inch (in²) to Square Foot (ft²), multiply the value by 0.0069444444.
Formula: ft² = in² × 0.0069444444
Reverse: in² = ft² × 144
Step-by-Step Example
- Start with your value in Square Inch. For example: 5 in²
- Multiply by the conversion factor: 5 x 0.0069444444
- The result is: 0.034722 ft²
About Square Inch
The square inch (in²) is a unit of area. One square inch equals 0.00064516 square metres. UnitConvertLab converts it against every other area unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: area calculations, engineering and science, education.
About Square Foot
The square foot is an imperial unit of area equal to a square with sides of 1 foot. It is the standard unit for real estate in the US.
Common uses: real estate (US), flooring, construction.
Frequently Asked Questions
How many Square Foot are in 1 Square Inch?
There are exactly 0.0069444444 Square Foot in 1 Square Inch. This means the conversion factor from Square Inch to Square Foot is 0.0069444444.
What is the formula to convert Square Inch to Square Foot?
The formula to convert Square Inch to Square Foot is: ft² = in² × 0.0069444444. For example, to convert 10 Square Inch to Square Foot, you would multiply 10 by 0.0069444444.
What is a Square Inch?
The square inch (in²) is a unit of area. One square inch equals 0.00064516 square metres. UnitConvertLab converts it against every other area unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Square Foot?
The square foot is an imperial unit of area equal to a square with sides of 1 foot. It is the standard unit for real estate in the US.
What are the common uses of Square Inch?
The Square Inch is commonly used in area calculations, engineering and science, education.
Related Area Conversions
Cite this page
UnitConvertLab. (2026). Square Inch to Square Foot converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/sqinch-to-sqfoot