The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
Topics:
Values
Energy
Equivalents
Searchable
Bibliography
Background

Constants
Bibliography

Constants,
Units &
Uncertainty
home page
[skip navigation]
Click symbol for equation
neutron mass energy equivalent in MeV
 $m_{\rm n}c^2$
 Numerical value  939.565 420 52 MeV
 Standard uncertainty    0.000 000 54 MeV
  Relative standard uncertainty  5.7 x 10-10
 Concise form  939.565 420 52(54) MeV    
 
Click here for correlation coefficient of this constant with other constants
Source: 2018 CODATA     
recommended values
 
Definition of
uncertainty
 
     Correlation coefficient with
any other constant

 
Go to a new search