Formula
ft² to in² conversion formula
Use this relationship for a direct conversion:
in² = ft² x 144
Worked example
2 ft² = 288 in².
Values derived from exact metric and international length definitions.
Area conversion
Convert Square foot to Square inch
1 square foot (ft²) equals 144 square inch (in²). Enter any value below to convert from ft² to in².
Enter a value and choose units. Results update instantly.
1 ft² = 144 in²
All Area units
From 1 ft²| Unit | Value |
|---|---|
| Square meter m² | 0.09290304 |
| Square kilometer km² | 0.0000000929 |
| Square centimeter cm² | 929.0304 |
| Square millimeter mm² | 92,903.04 |
| Square inch in² | 144 |
| Square foot ft² | 1 |
| Square yard yd² | 0.1111111111 |
| Square mile mi² | 0.0000000359 |
| Acre ac | 0.0000229568 |
| Hectare ha | 0.0000092903 |
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Quick reference
Square foot to Square inch table
| Square foot (ft²) | Square inch (in²) |
|---|---|
| 0.01 | 1.44 |
| 0.1 | 14.4 |
| 1 | 144 |
| 2 | 288 |
| 5 | 720 |
| 10 | 1,440 |
| 25 | 3,600 |
| 50 | 7,200 |
| 100 | 14,400 |
| 1,000 | 144,000 |
From unit
About the square foot
The area of a square one foot on each side.
Symbol: ft²
To unit
About the square inch
The area of a square one inch on each side.
Symbol: in²
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Source
Conversion standard
Definitions are checked against NIST SP 811: Area units. Calculations use full internal precision before display rounding.
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ft² to in² FAQ
How do you convert square foot to square inch?
Use the formula in² = ft² x 144. 1 square foot (ft²) equals 144 square inch (in²).
Is the ft² to in² conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.