The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
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kelvin-joule relationship
 $ (1\,{\rm K})\,k = ({\rm K}\, k/{\rm J})\,{\rm J} $
 Numerical value  1.380 649  x 10-23 J
 Standard uncertainty  (exact)
  Relative standard uncertainty  (exact)
 Concise form  1.380 649 x 10-23 J    
 
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

 
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