0.021 cm = 0.21 mm. To convert centimeters to millimeters, multiply by 10: 0.021 × 10 = 0.21.
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: 0.021 × 10 = 0.21.
- Answer: 0.021 cm = 0.21 mm.
Centimeters to Millimeters table
| Centimeters (cm) | Millimeters (mm) |
|---|---|
| 0.016 cm | 0.16 mm |
| 0.017 cm | 0.17 mm |
| 0.018 cm | 0.18 mm |
| 0.019 cm | 0.19 mm |
| 0.02 cm | 0.2 mm |
| 0.021 cm | 0.21 mm |
| 0.022 cm | 0.22 mm |
| 0.023 cm | 0.23 mm |
| 0.024 cm | 0.24 mm |
| 0.025 cm | 0.25 mm |
| 0.026 cm | 0.26 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.