4.5 mm = 0.45 cm. To convert millimeters to centimeters, divide by 10: 4.5 ÷ 10 = 0.45.
How to convert millimeters to centimeters
cm = mm × 0.1
- 1 mm = 0.1 cm (and 1 cm = 10 mm).
- Multiply the amount by the factor: 4.5 × 0.1 = 0.45.
- Answer: 4.5 mm = 0.45 cm.
Shortcut: dividing by 10 gives the same result as multiplying by 0.1.
Millimeters to Centimeters table
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 4 mm | 0.4 cm |
| 4.1 mm | 0.41 cm |
| 4.2 mm | 0.42 cm |
| 4.3 mm | 0.43 cm |
| 4.4 mm | 0.44 cm |
| 4.5 mm | 0.45 cm |
| 4.6 mm | 0.46 cm |
| 4.7 mm | 0.47 cm |
| 4.8 mm | 0.48 cm |
| 4.9 mm | 0.49 cm |
| 5 mm | 0.5 cm |
| mm | cm |
|---|---|
| 1 mm | 0.1 cm |
| 5 mm | 0.5 cm |
| 10 mm | 1 cm |
| 50 mm | 5 cm |
| 100 mm | 10 cm |
| 1,000 mm | 100 cm |
Good to know
1 inch = 2.54 cm exactly; 1 cm = 10 mm; 1 m = 100 cm; 1 foot = 12 inches = 30.48 cm.