Square Feet to Square Inches Converter
Convert square feet (sq ft) to square inches (sq in), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter an area, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 sq ft = 144 sq in
- 1 × 144 = 144 sq in
How to convert square feet to square inches
1 sq ft = 144 sq in, so multiply by 144 to go from square feet to square inches. Going the other way, 1 sq in = 0.00694444444444 sq ft.
sq in = sq ft × 144 sq ft = sq in × 0.00694444444444
Worked example:
1 sq ft = 144 sq in 5 × 144 = 720 sq in
Square Feet to square inches table
| 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 |
| 15 sq ft | 2,160 sq in |
| 20 sq ft | 2,880 sq in |
| 25 sq ft | 3,600 sq in |
| 30 sq ft | 4,320 sq in |
| 40 sq ft | 5,760 sq in |
| 50 sq ft | 7,200 sq in |
| 75 sq ft | 10,800 sq in |
| 100 sq ft | 14,400 sq in |
| 250 sq ft | 36,000 sq in |
| 500 sq ft | 72,000 sq in |
| 1000 sq ft | 144,000 sq in |
About the units
- Square Feet (sq ft)
- Square feet, a US customary unit. Definition: NIST Handbook 44 Appendix C (derived from the international foot).
- Square Inches (sq in)
- Square inches, a US customary unit. Definition: NIST Handbook 44 Appendix C (derived from the international inch).