The NIST Reference on Constants, Units and Uncertainty Information at the foundation of modern science and technology from the Physical Measurement Laboratory of NIST

CODATA Internationally recommended 2014 values of the
Fundamental Physical Constants

Constants
Topics:
Values
Energy
Equivalents
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Bibliography
Background

Constants
Bibliography

Constants,
Units &
Uncertainty
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    Find the correlation coefficient between any pair of constants

    See also
    Searchable bibliography on the constants
    Background information related to the constants
    Links to selected scientific data
    Previous Values (2010) (2006) (2002) (1998) (1986) (1973) (1969)

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    DEADLINE NOTICES!
    There will be an adjustment of the constants to provide the values for a revision of the International System of Units (SI) expected to take place in 2018. To be considered for use in this adjustment, new results must be accepted for publication by 1 July 2017.

    The 2018 CODATA adjustment of the fundamental constants will be based on the revised SI, which will significantly affect the uncertainties of many constants. For data to be considered for use in this adjustment, they must be discussed in a publication preprint or a publication by 1 July 2018.
 
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Online: October 1994   -   Last update: July 27, 2015