Convert Square Feet to Square Inches

Enter your square foot value in the form below to get the value calculated in square inches.

SWAP UNITS
Results in Square Inches:
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1 sq ft = 144 sq in

How to Convert Square Feet to Square Inches

Calculators can be used to convert measurements from one unit to another

Convert square feet to square inches with this simple formula:

square inches = square feet × 144

Converting a square foot area measurement to a square inch measurement involves multiplying the area by the conversion ratio to find the result. One square foot is equal to 144 square inches, so to convert simply multiply by 144.

For example, here's how to convert 5 square feet to square inches using the formula above.
5 sq ft = (5 × 144) = 720 sq in

Learn more on how to find the square footage of your space using our square footage calculator.

Square feet and square inches are both units used to measure area. Learn more about area and find more area measurement conversion calculators. Square feet are an imperial measurement and can be abbreviated as sq ft, for example 1 sq ft. Square inches are an imperial measurement and can be abbreviated as sq in, for example 1 sq in.

square feet and square inches are units used to measure area
Convert Square Inches to Square Feet

Square Foot Measurements and Equivalent Square Inch Conversions

Common square foot values converted to the equivalent square inch value
Square Feet Square Inches
1 sq ft 144 sq in
2 sq ft 288 sq in
3 sq ft 432 sq in
4 sq ft 576 sq in
5 sq ft 720 sq in
6 sq ft 864 sq in
7 sq ft 1,008 sq in
8 sq ft 1,152 sq in
9 sq ft 1,296 sq in
10 sq ft 1,440 sq in
11 sq ft 1,584 sq in
12 sq ft 1,728 sq in
13 sq ft 1,872 sq in
14 sq ft 2,016 sq in
15 sq ft 2,160 sq in
16 sq ft 2,304 sq in
17 sq ft 2,448 sq in
18 sq ft 2,592 sq in
19 sq ft 2,736 sq in
20 sq ft 2,880 sq in
21 sq ft 3,024 sq in
22 sq ft 3,168 sq in
23 sq ft 3,312 sq in
24 sq ft 3,456 sq in
25 sq ft 3,600 sq in
26 sq ft 3,744 sq in
27 sq ft 3,888 sq in
28 sq ft 4,032 sq in
29 sq ft 4,176 sq in
30 sq ft 4,320 sq in
31 sq ft 4,464 sq in
32 sq ft 4,608 sq in
33 sq ft 4,752 sq in
34 sq ft 4,896 sq in
35 sq ft 5,040 sq in
36 sq ft 5,184 sq in
37 sq ft 5,328 sq in
38 sq ft 5,472 sq in
39 sq ft 5,616 sq in
40 sq ft 5,760 sq in

More Square Foot Area Conversions

US Customary
Convert to Square Miles
1 sq ft is equal to 3.587E-8 square miles
Convert to Acres
1 sq ft is equal to 2.2957E-5 acres
Convert to Square Yards
1 sq ft is equal to 0.111111 square yards
SI Units
Convert to Square Kilometers
1 sq ft is equal to 9.2903E-8 square kilometers
Convert to Square Meters
1 sq ft is equal to 0.092903 square meters
Convert to Square Centimeters
1 sq ft is equal to 929.0304 square centimeters
Convert to Square Millimeters
1 sq ft is equal to 92,903 square millimeters
Are Units
Convert to Hectares
1 sq ft is equal to 9.2903E-6 hectares
Convert to Ares
1 sq ft is equal to 0.000929 ares