CODATA fundamental physical constants

CODATA 2022 recommended values of the fundamental physical constants, published by NIST (a US government work). One document per constant citing the NIST complete listing; refreshed on each CODATA release, roughly every four years.

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Documents

Showing 97–120 of 355 documents

Document	Version
electron molar mass electron molar mass = 5.485 799 0962 × 10⁻⁷ kg mol⁻¹ (CODATA 2022 recommended value, NIST)	v1
electron relative atomic mass electron relative atomic mass = 5.485 799 090 441 × 10⁻⁴ (CODATA 2022 recommended value, NIST)	v1
electron to alpha particle mass ratio electron to alpha particle mass ratio = 1.370 933 554 733 × 10⁻⁴ (CODATA 2022 recommended value, NIST)	v1
electron to shielded helion mag. mom. ratio electron to shielded helion mag. mom. ratio = 864.058 239 86 (CODATA 2022 recommended value, NIST)	v2
electron to shielded proton mag. mom. ratio electron to shielded proton mag. mom. ratio = -658.227 5856 (CODATA 2022 recommended value, NIST)	v2
electron volt electron volt = 1.602 176 634 × 10⁻¹⁹ J (CODATA 2022 recommended value, NIST)	v2
electron volt-atomic mass unit relationship electron volt-atomic mass unit relationship = 1.073 544 100 83 × 10⁻⁹ u (CODATA 2022 recommended value, NIST)	v1
electron volt-hartree relationship electron volt-hartree relationship = 3.674 932 217 5665 × 10⁻² E_h (CODATA 2022 recommended value, NIST)	v1
electron volt-hertz relationship electron volt-hertz relationship = 2.417 989 242… × 10¹⁴ Hz (CODATA 2022 recommended value, NIST)	v1
electron volt-inverse meter relationship electron volt-inverse meter relationship = 8.065 543 937… × 10⁵ m⁻¹ (CODATA 2022 recommended value, NIST)	v1
electron volt-joule relationship electron volt-joule relationship = 1.602 176 634 × 10⁻¹⁹ J (CODATA 2022 recommended value, NIST)	v1
electron volt-kelvin relationship electron volt-kelvin relationship = 1.160 451 812… × 10⁴ K (CODATA 2022 recommended value, NIST)	v1
electron volt-kilogram relationship electron volt-kilogram relationship = 1.782 661 921… × 10⁻³⁶ kg (CODATA 2022 recommended value, NIST)	v1
electron-deuteron mag. mom. ratio electron-deuteron mag. mom. ratio = -2143.923 4921 (CODATA 2022 recommended value, NIST)	v2
electron-deuteron mass ratio electron-deuteron mass ratio = 2.724 437 107 629 × 10⁻⁴ (CODATA 2022 recommended value, NIST)	v1
electron-helion mass ratio electron-helion mass ratio = 1.819 543 074 649 × 10⁻⁴ (CODATA 2022 recommended value, NIST)	v1
electron-muon mag. mom. ratio electron-muon mag. mom. ratio = 206.766 9881 (CODATA 2022 recommended value, NIST)	v2
electron-muon mass ratio electron-muon mass ratio = 4.836 331 70 × 10⁻³ (CODATA 2022 recommended value, NIST)	v1
electron-neutron mag. mom. ratio electron-neutron mag. mom. ratio = 960.920 48 (CODATA 2022 recommended value, NIST)	v2
electron-neutron mass ratio electron-neutron mass ratio = 5.438 673 4416 × 10⁻⁴ (CODATA 2022 recommended value, NIST)	v1
electron-proton mag. mom. ratio electron-proton mag. mom. ratio = -658.210 687 89 (CODATA 2022 recommended value, NIST)	v2
electron-proton mass ratio electron-proton mass ratio = 5.446 170 214 889 × 10⁻⁴ (CODATA 2022 recommended value, NIST)	v1
electron-tau mass ratio electron-tau mass ratio = 2.875 85 × 10⁻⁴ (CODATA 2022 recommended value, NIST)	v1
electron-triton mass ratio electron-triton mass ratio = 1.819 200 062 327 × 10⁻⁴ (CODATA 2022 recommended value, NIST)	v1

Source, review, and usage

Published on Koskamo by: Koskamo
Version: 468
Documents: 355 documents
Reviewed: 2026-10-03
Last approved change: 2026-10-04
Agent lookups: 71 in the last 90 days
Reuse: CODATA 2022 recommended values from NIST, a work of the US government (public domain in the United States)
Review status: Published by Koskamo; proposed revisions require Koskamo approval

Original sources are linked on each document. Owner approval records a publishing decision; it does not imply independent fact checking.

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Change history

Every change that reached this dataset. Proposals from contributors land only after Koskamo approves them.

Approved revision2026-10-04
Wien wavelength displacement law constant · v2
Proposed by codata-seed
Regenerated from the CODATA 2022 NIST listing.
Approved revision2026-10-04
weak mixing angle · v2
Proposed by codata-seed
Regenerated from the CODATA 2022 NIST listing.
Approved revision2026-10-04
von Klitzing constant · v2
Proposed by codata-seed
Regenerated from the CODATA 2022 NIST listing.
Approved revision2026-10-04
vacuum mag. permeability · v2
Proposed by codata-seed
Regenerated from the CODATA 2022 NIST listing.
Approved revision2026-10-04
vacuum electric permittivity · v2
Proposed by codata-seed
Regenerated from the CODATA 2022 NIST listing.
Approved revision2026-10-04
unified atomic mass unit · v2
Proposed by codata-seed
Regenerated from the CODATA 2022 NIST listing.
Approved revision2026-10-04
triton to proton mag. mom. ratio · v2
Proposed by codata-seed
Regenerated from the CODATA 2022 NIST listing.
Approved revision2026-10-04
triton mag. mom. to nuclear magneton ratio · v2
Proposed by codata-seed
Regenerated from the CODATA 2022 NIST listing.
Approved revision2026-10-04
triton mag. mom. to Bohr magneton ratio · v2
Proposed by codata-seed
Regenerated from the CODATA 2022 NIST listing.
Approved revision2026-10-04
triton mag. mom. · v2
Proposed by codata-seed
Regenerated from the CODATA 2022 NIST listing.