Square Feet to Square Inches converter (ft² to in²)
Convert Square Feet (ft²) to Square Inches (in²) with this free calculator. Type a value, press Convert, and the page applies the same factor shown in the formula below — no rounded shortcut, and nothing is stored on a server.
Square Inches to Square Feet (in² to ft²) ►
How to convert Square Feet to Square Inches
1 square foot (ft²) is equal to 144 square inches (in²).
in² = ft² × 144
Multiply the square feet by 144:
Example: Convert 5 ft² to in²:
in² = 5 × 144 = 720 in²
What is a Square Feet?
The Square Feet (ft²) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
What is a Square Inches?
The Square Inches (in²) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
This page converts area from Square Feet into Square Inches. One ft² equals 144 in².
Square Feet to Square Inches conversion table
Common ft² values and the matching in² result, calculated with the same factor as the widget. Highlight a nearby row if you want a quick check without entering a number.
| Square Feet (ft²) | Square Inches (in²) |
|---|---|
| 1 ft² | 144 in² |
| 2 ft² | 288 in² |
| 5 ft² | 720 in² |
| 10 ft² | 1440 in² |
| 20 ft² | 2880 in² |
| 50 ft² | 7200 in² |
| 100 ft² | 14400 in² |
How this calculator works
The form on this page is a Square Feet-to-Square Inches converter. After you enter a number, JavaScript multiplies or rearranges it with the published conversion factor and writes the in² result in the output box. The step-by-step panel repeats the arithmetic so you can copy it into homework or a spreadsheet.
Reviewed by Hamsen, founder of GigaTables and a biology engineer. See the about page for how formulas are checked before a tool is published.
FAQ
How many in² are in 1 ft²?
1 ft² = 144 in².
How do I convert Square Feet to Square Inches?
Multiply the square feet by 144:
Is this ft² to in² converter free?
Yes. GigaTables calculators are free to use in a browser. You do not need an account, and the values you type are not uploaded.