84.2 cm = 842 mm. To convert centimeters to millimeters, multiply by 10: 84.2 × 10 = 842.
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: 84.2 × 10 = 842.
- Answer: 84.2 cm = 842 mm.
Centimeters to Millimeters table
| Centimeters (cm) | Millimeters (mm) |
|---|---|
| 83.7 cm | 837 mm |
| 83.8 cm | 838 mm |
| 83.9 cm | 839 mm |
| 84 cm | 840 mm |
| 84.1 cm | 841 mm |
| 84.2 cm | 842 mm |
| 84.3 cm | 843 mm |
| 84.4 cm | 844 mm |
| 84.5 cm | 845 mm |
| 84.6 cm | 846 mm |
| 84.7 cm | 847 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.