Square Feet to Square Inches Converter (ft² to in²)

1 ft² = 144 in²

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Formula

To convert square feet to square inches, multiply the value by 144.

in² = ft² × 144

Example calculation

Convert 5 ft² to in²:

5 ft² × 144 = 720 in²

Conversion table

square feet → square inches
ft²in²
1144.0000
2288.0000
3432.0000
4576.0000
5720.0000
6864.0000
71008.0000
81152.0000
91296.0000
101440.0000
152160.0000
202880.0000
253600.0000
304320.0000
355040.0000
405760.0000
456480.0000
507200.0000
557920.0000
608640.0000
659360.0000
7010080.0000
7510800.0000
8011520.0000
8512240.0000
9012960.0000
9513680.0000
10014400.0000
20028800.0000
50072000.0000
1000144000.0000
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About the units

Square Foot (ft²)
Used for homes and property in the US and UK. Exactly 0.09290304 square metres.
Square Inch (in²)
Used in the US for small areas and pressure (psi). Exactly 6.4516 square centimetres.

Frequently asked questions

How do I convert square feet to square inches?
To convert square feet to square inches, multiply the value by 144.
How many square inches are in 1 square foot?
1 square foot equals 144 in².
How many square inches are in 10 square feet?
10 ft² equals 1440 in².
How do I convert square inches back to square feet?
Use the reverse converter: 1 square inch equals 0.00694444 ft².
Is this converter accurate?
Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

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