How to convert square inches to square feet
Divide the square inches by 144. For example, 864 sq in / 144 = 6 sq ft.
To go the other way, multiply the square feet by 144. For example, 5 sq ft x 144 = 720 sq in.
If you only have the length and width in inches, multiply them to get square inches, then divide by 144.
Square inches to square feet chart
| Square inches | Square feet |
|---|---|
| 1 | 0.01 |
| 12 | 0.08 |
| 36 | 0.25 |
| 72 | 0.5 |
| 100 | 0.69 |
| 144 | 1 |
| 288 | 2 |
| 432 | 3 |
| 576 | 4 |
| 720 | 5 |
| 1,000 | 6.94 |
| 1,296 | 9 |
Common sizes in inches
| Size (in) | Square inches | Square feet |
|---|---|---|
| 12 x 12 | 144 | 1 |
| 12 x 24 | 288 | 2 |
| 18 x 24 | 432 | 3 |
| 24 x 36 | 864 | 6 |
| 30 x 60 | 1,800 | 12.5 |
| 36 x 48 | 1,728 | 12 |
| 48 x 96 | 4,608 | 32 |
Frequently asked questions
How many square inches are in a square foot?
There are 144 square inches in one square foot. A square foot is a square 12 inches on each side, and 12 x 12 = 144. So 288 square inches is 2 square feet and 720 square inches is 5 square feet. Half a square foot is 72 square inches.
How do you convert inches to square feet?
Multiply the length by the width in inches to get square inches, then divide by 144. A 24 by 36 inch area is 24 x 36 = 864 square inches, and 864 divided by 144 is 6 square feet. You can also divide each side by 12 first: 2 feet x 3 feet is 6 square feet.
How do you calculate square feet from inches for a room?
Convert each measurement to feet by dividing the inches by 12, then multiply. A room 150 inches by 120 inches is 12.5 feet by 10 feet, which is 125 square feet. If your tape reads in feet and inches, use the square footage calculator, which has a separate inches box.
How many square feet is a 4 by 8 sheet?
A 4 by 8 foot sheet, such as plywood or drywall, is 32 square feet, because 4 x 8 = 32. In inches it is 48 by 96, which is 4,608 square inches, and 4,608 divided by 144 is 32. Divide the area you need to cover by 32 to estimate how many sheets to buy.
What is 100 square inches in square feet?
100 square inches is about 0.69 square feet, because 100 divided by 144 is 0.6944. A square 10 inches on each side has that area. To go the other way, multiply square feet by 144: 0.5 square feet is 72 square inches and 1.5 square feet is 216 square inches.