Online calculator to convert square feet to square inches (ft2 to in2) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Area units.
Conversion Calculator
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Convert ft2 to in2
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Conversion Definitions
The following is a list of definitions relating to conversions between square feet and square inches.
What is a square foot (ft2)?
A square foot is a unit of area in both US Customary Units as well as the Imperial System. The symbol for square foot is ft2 or sq ft. There are 0.00694444 square feet in a square inch. A square foot is calculated as the area of a square that has 1 foot on each side.
What is a square inch (in2)?
A square inch is a unit of area in both US Customary Units as well as the Imperial System. The symbol for square inch is in2 or sq in. There are 144 square inches in a square foot. A square inch is calculated as the area of a square that has 1 inch on each side.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from ft2 to in2 is:
in2 = ft2 x 144
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from square feet to square inches (ft2 to in2).
Square Feet to Square Inches Conversion Example
Task: Convert 9 square feet to square inches (show work) Formula: ft2 x 144 = in2 Calculations: 9 ft2 x 144 = 1,296 in2 Result: 9 ft2 is equal to 1,296 in2
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from ft2 to in2.
Square Feet to Square Inches Conversion Chart
| 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 |
| 20 ft2 | 2,880 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 |
| 750 ft2 | 108,000 in2 |
| 1,000 ft2 | 144,000 in2 |
| 2,500 ft2 | 360,000 in2 |
| 5,000 ft2 | 720,000 in2 |
| 7,500 ft2 | 1,080,000 in2 |
| 10,000 ft2 | 1,440,000 in2 |
| 25,000 ft2 | 3,600,000 in2 |
| 50,000 ft2 | 7,200,000 in2 |
| 75,000 ft2 | 10,800,000 in2 |
| 100,000 ft2 | 14,400,000 in2 |
| 250,000 ft2 | 36,000,000 in2 |
Related Units
This table provides a summary of the Area units within their respective measurement systems.
| Unit | Symbol | Measurement System |
|---|---|---|
| square inches | in2 or sq in | US Customary Units/Imperial System |
| square feet | ft2 or sq ft | US Customary Units/Imperial System |
| square yards | yd2 or sq yd | US Customary Units/Imperial System |
| acres | ac | US Customary Units/Imperial System |
| square miles | mi2 or sq mi | US Customary Units/Imperial System |
| square millimeters | mm2 | Metric System |
| square centimeters | cm2 | Metric System |
| square decimeters | dm2 | Metric System |
| square meters | m2 | Metric System |
| square decameters | dam2 | Metric System |
| square hectometers | hm2 | Metric System |
| hectares | ha | Metric System |
| square kilometers | km2 | Metric System |
Note: For area conversions, US Customary Units and the Imperial System are equivalent.
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