Square inch (in²)
The area of a 1 in × 1 in square.
Result
1 square inch = 6.4516 square centimeters
Square inch at a glance
| Unit name | Square inch (plural: square inches) |
|---|---|
| Symbol | in² |
| Quantity measured | Area |
| Measurement system | US customary |
| Also known as | sq in, in2, square inches |
| Definition exact? | Yes — exact by definition |
1 square inch in other area units
| Unit | 1 in² equals |
|---|---|
| Square millimeter | 645.16 mm² |
| Square centimeter | 6.4516 cm² |
| Square meter | 0.00064516 m² |
| Square kilometer | 6.4516 × 10⁻¹⁰ km² |
| Square foot | 0.006944444 ft² |
| Square yard | 0.000771605 yd² |
| Square mile | 2.49097669 × 10⁻¹⁰ mi² |
| Acre | 0.000000159 ac |
| Hectare | 6.4516 × 10⁻⁸ ha |
| Are | 0.000006452 a |
| Square nautical mile | 1.88098559 × 10⁻¹⁰ sq nmi |
| Barn | 6.4516 × 10²⁴ b |
Popular square inch conversions
Frequently asked questions
- What is a square inch?
- The area of a 1 in × 1 in square.
- What is the symbol for the square inch?
- The symbol for the square inch is in². It measures area.
- How many square centimeters are in a square inch?
- 1 square inch = 6.4516 square centimeters.
- How many square meters are in a square inch?
- 1 square inch = 0.00064516 square meters.
- How many square feet are in a square inch?
- 1 square inch = 0.006944444 square feet.