121 mm = 12.1 cm. To convert millimeters to centimeters, divide by 10: 121 ÷ 10 = 12.1.
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: 121 × 0.1 = 12.1.
- Answer: 121 mm = 12.1 cm.
Shortcut: dividing by 10 gives the same result as multiplying by 0.1.
Millimeters to Centimeters table
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 116 mm | 11.6 cm |
| 117 mm | 11.7 cm |
| 118 mm | 11.8 cm |
| 119 mm | 11.9 cm |
| 120 mm | 12 cm |
| 121 mm | 12.1 cm |
| 122 mm | 12.2 cm |
| 123 mm | 12.3 cm |
| 124 mm | 12.4 cm |
| 125 mm | 12.5 cm |
| 126 mm | 12.6 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.