345 mm = 34.5 cm. To convert millimeters to centimeters, divide by 10: 345 ÷ 10 = 34.5.
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: 345 × 0.1 = 34.5.
- Answer: 345 mm = 34.5 cm.
Shortcut: dividing by 10 gives the same result as multiplying by 0.1.
Millimeters to Centimeters table
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 340 mm | 34 cm |
| 341 mm | 34.1 cm |
| 342 mm | 34.2 cm |
| 343 mm | 34.3 cm |
| 344 mm | 34.4 cm |
| 345 mm | 34.5 cm |
| 346 mm | 34.6 cm |
| 347 mm | 34.7 cm |
| 348 mm | 34.8 cm |
| 349 mm | 34.9 cm |
| 350 mm | 35 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.