Convert Square Inches to Square Feet
Convert Square Inches to Square Feet instantly. 1 Square Inch (in²) equals 0.006944 Square Feet (ft²).
Square Inches to Square Feet conversion table
| Square Inches (in²) | Square Feet (ft²) |
|---|---|
| 1 in² | 0.006944 ft² |
| 2 in² | 0.01389 ft² |
| 3 in² | 0.02083 ft² |
| 5 in² | 0.03472 ft² |
| 10 in² | 0.06944 ft² |
| 20 in² | 0.1389 ft² |
| 50 in² | 0.3472 ft² |
| 100 in² | 0.6944 ft² |
| 500 in² | 3.4722 ft² |
| 1,000 in² | 6.9444 ft² |
1 Square Inch = 0.006944 Square Feet · multiply Square Inches by 0.006944
About converting Square Inches to Square Feet
Square Inches (in²) and Square Feet (ft²) are both units of area, so converting between them is a single multiplication: multiply your Square Inches figure by 0.006944. Ten Square Inches comes to 0.06944 Square Feet, and a hundred works out at 0.6944 Square Feet.
Rule of thumb: going from Square Inches to Square Feet divides, so the figure always shrinks — it takes about 144 Square Inches to make a single Square Foot. If your answer came out bigger, you have the conversion the wrong way round.
What is a Square Inch?
A square inch is the area of a square one inch on a side. You rarely meet it measuring a surface for its own sake; its real career is as a denominator. Pounds per square inch — psi — is how tyre pressure, hydraulics, air compressors and boiler ratings are quoted throughout the United States and, for tyres at least, in much of the metric world too. It also turns up in machining and materials work, where the load a bolt or a beam will take is naturally expressed per square inch of cross-section rather than in total.
What is a Square Foot?
The square foot is the area of a square one foot on a side, and it is the unit American and Indian real estate runs on — apartments, offices and warehouses are advertised, valued and rented by it, while most of Europe quotes the identical thing in square meters. It is also where the commonest conceptual mistake about area surfaces. Area scales with the square of length, so converting a room’s dimensions and converting its floor area are not the same operation: double a room’s length and width and you have not doubled the floor, you have quadrupled it.
To put both in perspective: a credit card is a little over 7 square inches, while a typical US one-bedroom apartment is around 700 square feet.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Square Feet to Square Inches converter, or browse all Area converters.
Frequently asked questions
How many Square Feet are in one Square Inch?
There are 0.006944 Square Feet in one Square Inch.
How do I convert Square Inches to Square Feet?
Multiply the number of Square Inches by 0.006944. For example, 10 Square Inches = 0.06944 Square Feet.
What is 100 Square Inches in Square Feet?
100 Square Inches is equal to 0.6944 Square Feet.
How do I convert Square Feet to Square Inches?
Multiply the Square Feet value by 144 (or divide by 0.006944).
Is this Square Inches to Square Feet conversion exact?
The definition is exact — Square Inches and Square Feet are both fixed against the same base by international agreement — but the decimal shown here is rounded for readability, because the true ratio does not terminate. For engineering or scientific work, carry more decimal places than this page displays.
What is a Square Inch?
A square inch is the area of a square one inch on a side. You rarely meet it measuring a surface for its own sake; its real career is as a denominator. Pounds per square inch — psi — is how tyre pressure, hydraulics, air compressors and boiler ratings are quoted throughout the United States and, for tyres at least, in much of the metric world too. It also turns up in machining and materials work, where the load a bolt or a beam will take is naturally expressed per square inch of cross-section rather than in total.
What is a Square Foot?
The square foot is the area of a square one foot on a side, and it is the unit American and Indian real estate runs on — apartments, offices and warehouses are advertised, valued and rented by it, while most of Europe quotes the identical thing in square meters. It is also where the commonest conceptual mistake about area surfaces. Area scales with the square of length, so converting a room’s dimensions and converting its floor area are not the same operation: double a room’s length and width and you have not doubled the floor, you have quadrupled it.