42.2 mm2 = 0.422 cm2. To convert square millimeters to square centimeters, divide by 100: 42.2 ÷ 100 = 0.422.
How to convert square millimeters to square centimeters
cm2 = mm2 × 0.01
- 1 mm2 = 0.01 cm2 (and 1 cm2 = 100 mm2).
- Multiply the amount by the factor: 42.2 × 0.01 = 0.422.
- Answer: 42.2 mm2 = 0.422 cm2.
Shortcut: dividing by 100 gives the same result as multiplying by 0.01.
Square Millimeters to Square Centimeters table
| Square Millimeters (mm2) | Square Centimeters (cm2) |
|---|---|
| 41.7 mm2 | 0.417 cm2 |
| 41.8 mm2 | 0.418 cm2 |
| 41.9 mm2 | 0.419 cm2 |
| 42 mm2 | 0.42 cm2 |
| 42.1 mm2 | 0.421 cm2 |
| 42.2 mm2 | 0.422 cm2 |
| 42.3 mm2 | 0.423 cm2 |
| 42.4 mm2 | 0.424 cm2 |
| 42.5 mm2 | 0.425 cm2 |
| 42.6 mm2 | 0.426 cm2 |
| 42.7 mm2 | 0.427 cm2 |
| mm2 | cm2 |
|---|---|
| 1 mm2 | 0.01 cm2 |
| 5 mm2 | 0.05 cm2 |
| 10 mm2 | 0.1 cm2 |
| 50 mm2 | 0.5 cm2 |
| 100 mm2 | 1 cm2 |
| 1,000 mm2 | 10 cm2 |