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21 kilometers (km) = 2100000 centimeters (cm). To convert 21 km to cm, multiply the length value by the conversion factor 100000.
Number of kilometers × 100000 = Value in centimeters
21 km = 21 × 100000 = 2100000 cm
| Kilometers [km] | Centimeters [cm] |
| 21 | 2100000 |
| 22 | 2200000 |
| 23 | 2300000 |
| 24 | 2400000 |
| 25 | 2500000 |
| 26 | 2600000 |
| 27 | 2700000 |
| 28 | 2800000 |
| 29 | 2900000 |
| 30 | 3000000 |
| 31 | 3100000 |
| 32 | 3200000 |
| 33 | 3300000 |
| 34 | 3400000 |
| 35 | 3500000 |
| 36 | 3600000 |
| 37 | 3700000 |
| 38 | 3800000 |
| 39 | 3900000 |
| 40 | 4000000 |
How many centimeters are there in a kilometer?
There are 100000 centimeters in a kilometer.
Which is the bigger unit?
Kilometer is the bigger unit than centimeter.