680 cm = 0.0068 km. To convert centimeters to kilometers, divide by 100,000: 680 ÷ 100,000 = 0.0068.
How to convert centimeters to kilometers
km = cm × 0.00001
- 1 cm = 0.00001 km (and 1 km = 100,000 cm).
- Multiply the amount by the factor: 680 × 0.00001 = 0.0068.
- Answer: 680 cm = 0.0068 km.
Shortcut: dividing by 100,000 gives the same result as multiplying by 0.00001.
Centimeters to Kilometers table
| Centimeters (cm) | Kilometers (km) |
|---|---|
| 675 cm | 0.00675 km |
| 676 cm | 0.00676 km |
| 677 cm | 0.00677 km |
| 678 cm | 0.00678 km |
| 679 cm | 0.00679 km |
| 680 cm | 0.0068 km |
| 681 cm | 0.00681 km |
| 682 cm | 0.00682 km |
| 683 cm | 0.00683 km |
| 684 cm | 0.00684 km |
| 685 cm | 0.00685 km |
| cm | km |
|---|---|
| 1 cm | 0.00001 km |
| 5 cm | 0.00005 km |
| 10 cm | 0.0001 km |
| 50 cm | 0.0005 km |
| 100 cm | 0.001 km |
| 1,000 cm | 0.01 km |
Good to know
1 inch = 2.54 cm exactly; 1 cm = 10 mm; 1 m = 100 cm; 1 foot = 12 inches = 30.48 cm.