To convert circular inches to square inches, multiply the value by 0.785398. To go the other way, multiply square inches by 1.27324 to get circular inches.
| Circular Inches (cir in) | Square Inches (in²) |
|---|---|
| 1 cir in | 0.785398 in² |
| 2 cir in | 1.5708 in² |
| 5 cir in | 3.92699 in² |
| 10 cir in | 7.85398 in² |
| 20 cir in | 15.708 in² |
| 50 cir in | 39.2699 in² |
| 100 cir in | 78.5398 in² |
| 500 cir in | 392.699 in² |
| 1,000 cir in | 785.398 in² |
Circular inch (cir in). A circular inch is the area of a circle 1 inch across (π/4 square inches).
Square inch (in²). A square inch is the area of a square with 1-inch sides (6.4516 cm²).
There are 0.785398 square inches in one circular inch.
Multiply the number of circular inches by 0.785398. For example, 10 circular inches equal 7.85398 square inches.
One square inch equals 1.27324 circular inches.