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