About the Units
femtometer (fm)
An ultra-small length unit used in nuclear and particle physics.
attometer (am)
An exceptionally small length unit at the subatomic scale.
Common Conversions
- 1 fm = 999.99994 am
- 0.001 fm = 1 am
Convert from femtometers to attometers
Conversion Information
To convert from femtometers to attometers, multiply by 999.99994
1 fm = 999.99994 am