How to convert square inches to square feet
To convert a measurement in square inches to square feet, multiply the value by 0.006944444444. The conversion factor comes from the relationship between both units and the square meter.
For example, to convert 5 in² to square feet: 5 × 0.006944444444 = 0.034722222222 ft².
What is a square inch?
A square inch is an imperial and US customary unit of area equal to the area of a square one inch on each side, exactly 6.4516 square centimeters. The square inch is used for small areas in the US and UK, notably in engineering where pressure is measured in pounds per square inch (psi), one of the most common pressure units in the world.
Common uses of square inches include: Pressure measurement (pounds per square inch); Print and display area; Small material and gasket areas; Product surface and packaging specs.
What is a square foot?
A square foot is an imperial and US customary unit of area equal to the area of a square one foot on each side, about 0.0929 square meters. The square foot is the dominant unit for floor area in US and UK real estate, where home and office sizes are quoted in square feet. It remains the everyday area unit throughout the imperial world.
Common uses of square feet include: Home and office floor area in the US and UK; Real estate listings and rent per square foot; Flooring, tiling, and paint coverage; Retail and commercial space sizing.
Square Inches to square feet worked examples
Here are some common values converted:
1 in² = 0.006944444444 ft² 5 in² = 0.034722222222 ft² 10 in² = 0.069444444444 ft² 50 in² = 0.347222222222 ft² 100 in² = 0.694444444444 ft²
Frequently asked questions
How many square feet are in one square inch?
One square inch (in²) equals 0.006944444444 square feet (ft²). Multiply any value in square inches by 0.006944444444 to convert to square feet.
How do I convert square inches to square feet?
Multiply the value in square inches by 0.006944444444. For example, 5 in² × 0.006944444444 = 0.034722222222 ft².
How do I convert square feet to square inches?
Multiply the value in square feet by 144, or divide by 0.006944444444. Use the swap button on the converter above to reverse the direction.
Is the square inch to square foot conversion exact?
Yes. Area conversions derive from the exact 1959 international definitions of the meter, yard, and foot, so the factors are exact.
What is the formula for square inches to square feet?
The formula is: ft² = in² × 0.006944444444. This comes from the definition of both units relative to the square meter.