About the Units
kilometer (km)
A standard length unit equal to 1000 meters, commonly used for distances.
zeptometer (zm)
An incredibly tiny length unit beyond standard measurement scales.
Common Conversions
- 1 km = 1e24 zm
- 9.999999e-25 km = 1 zm
Convert from kilometers to zeptometers
Conversion Information
To convert from kilometers to zeptometers, multiply by 1e24
1 km = 1e24 zm