Convert Square Feet to Square Inches
Convert Square Feet to Square Inches instantly. 1 Square Foot (ft²) equals 144 Square Inches (in²).
Square Feet to Square Inches conversion table
| Square Feet (ft²) | Square Inches (in²) |
|---|---|
| 1 ft² | 144 in² |
| 2 ft² | 288 in² |
| 3 ft² | 432 in² |
| 5 ft² | 720 in² |
| 10 ft² | 1,440 in² |
| 20 ft² | 2,880 in² |
| 50 ft² | 7,200 in² |
| 100 ft² | 14,400 in² |
| 500 ft² | 72,000 in² |
| 1,000 ft² | 144,000 in² |
1 Square Foot = 144 Square Inches · multiply Square Feet by 144
About converting Square Feet to Square Inches
Square Feet (ft²) and Square Inches (in²) are both units of area, so converting between them is a single multiplication: multiply your Square Feet figure by 144. Ten Square Feet comes to 1,440 Square Inches, and a hundred works out at 14,400 Square Inches.
Rule of thumb: going from Square Feet to Square Inches multiplies, so the figure always grows — one Square Foot is already 144 Square Inches. If your answer came out smaller, you have the conversion the wrong way round.
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.
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.
To put both in perspective: a typical US one-bedroom apartment is around 700 square feet, while a credit card is a little over 7 square inches.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Square Inches to Square Feet converter, or browse all Area converters.
Frequently asked questions
How many Square Inches are in one Square Foot?
There are 144 Square Inches in one Square Foot.
How do I convert Square Feet to Square Inches?
Multiply the number of Square Feet by 144. For example, 10 Square Feet = 1,440 Square Inches.
What is 100 Square Feet in Square Inches?
100 Square Feet is equal to 14,400 Square Inches.
How do I convert Square Inches to Square Feet?
Multiply the Square Inches value by 0.006944 (or divide by 144).
Is this Square Feet to Square Inches conversion exact?
Yes, exactly. Both units are fixed against the same base by definition, and 1 Square Foot = 144 Square Inches is the complete value — nothing is rounded away.
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.
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.