64.2 cm = 642 mm. To convert centimeters to millimeters, multiply by 10: 64.2 × 10 = 642.
How to convert centimeters to millimeters
mm = cm × 10
- 1 cm = 10 mm (and 1 mm = 0.1 cm).
- Multiply the amount by the factor: 64.2 × 10 = 642.
- Answer: 64.2 cm = 642 mm.
Centimeters to Millimeters table
| Centimeters (cm) | Millimeters (mm) |
|---|---|
| 63.7 cm | 637 mm |
| 63.8 cm | 638 mm |
| 63.9 cm | 639 mm |
| 64 cm | 640 mm |
| 64.1 cm | 641 mm |
| 64.2 cm | 642 mm |
| 64.3 cm | 643 mm |
| 64.4 cm | 644 mm |
| 64.5 cm | 645 mm |
| 64.6 cm | 646 mm |
| 64.7 cm | 647 mm |
| cm | mm |
|---|---|
| 1 cm | 10 mm |
| 5 cm | 50 mm |
| 10 cm | 100 mm |
| 50 cm | 500 mm |
| 100 cm | 1,000 mm |
| 1,000 cm | 10,000 mm |
Good to know
1 inch = 2.54 cm exactly; 1 cm = 10 mm; 1 m = 100 cm; 1 foot = 12 inches = 30.48 cm.