About the Units
zettameter (Zm)
A massive length unit equal to 10^21 meters.
femtometer (fm)
An ultra-small length unit used in nuclear and particle physics.
Common Conversions
- 1 Zm = 1.00000004e36 fm
- 9.9999995e-37 Zm = 1 fm
Convert from zettameters to femtometers
Conversion Information
To convert from zettameters to femtometers, multiply by 1.00000004e36
1 Zm = 1.00000004e36 fm