9.99 mm = 0.999 cm. To convert millimeters to centimeters, divide by 10: 9.99 ÷ 10 = 0.999.
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: 9.99 × 0.1 = 0.999.
- Answer: 9.99 mm = 0.999 cm.
Shortcut: dividing by 10 gives the same result as multiplying by 0.1.
Millimeters to Centimeters table
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 9.94 mm | 0.994 cm |
| 9.95 mm | 0.995 cm |
| 9.96 mm | 0.996 cm |
| 9.97 mm | 0.997 cm |
| 9.98 mm | 0.998 cm |
| 9.99 mm | 0.999 cm |
| 10 mm | 1 cm |
| 10.01 mm | 1.001 cm |
| 10.02 mm | 1.002 cm |
| 10.03 mm | 1.003 cm |
| 10.04 mm | 1.004 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.