Area Converter
Square units, acres and hectares.
Conversion
Square Feet to Square Inches Converter
1 square foot = 144 in². Enter any value to convert square feet (ft²) to square inches (in²), or use the table below for common values.
Formula
in² = ft² × 144
Example: 10 ft² = 1,440 in². To convert the other way, use ft² = in² × 0.006944444444.
Quick mental estimate: multiply by about 140.
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 |
| 4 ft² | 576 in² |
| 5 ft² | 720 in² |
| 6 ft² | 864 in² |
| 7 ft² | 1,008 in² |
| 8 ft² | 1,152 in² |
| 9 ft² | 1,296 in² |
| 10 ft² | 1,440 in² |
| 15 ft² | 2,160 in² |
| 20 ft² | 2,880 in² |
| 25 ft² | 3,600 in² |
| 30 ft² | 4,320 in² |
| 40 ft² | 5,760 in² |
| 50 ft² | 7,200 in² |
| 75 ft² | 10,800 in² |
| 100 ft² | 14,400 in² |
| 250 ft² | 36,000 in² |
| 500 ft² | 72,000 in² |
| 1,000 ft² | 144,000 in² |
About square feet and square inches
The square foot is exactly 0.09290304 m². Homes and offices in the US, UK and Canada are commonly listed in square feet.
The square inch is the area of a square with 1-inch sides, exactly 6.4516 cm². It is used for small surfaces and, in psi, for pressure.
Other Area conversions
Square Inches → Square FeetReverse conversionSquare Meters → Square Inchesm² → in²Square Kilometers → Square Incheskm² → in²Square Feet → Square Metersft² → m²Square Feet → Square Kilometersft² → km²Square Feet → Square Yardsft² → yd²Square Feet → Square Milesft² → mi²Square Feet → Acresft² → acSquare Feet → Hectaresft² → haSquare Yards → Square Inchesyd² → in²Square Miles → Square Inchesmi² → in²Acres → Square Inchesac → in²Hectares → Square Inchesha → in²
Frequently asked questions
How do I convert square feet to square inches?
Use the formula in² = ft² × 144. For example, 10 ft² = 1,440 in².
What is 1 square foot in square inches?
1 ft² = 144 in².
How do I convert square inches back to square feet?
Use ft² = in² × 0.006944444444. 1 in² = 0.006944444444 ft².