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 25–48 of 355 documents

Document	Version
atomic unit of charge density atomic unit of charge density = 1.081 202 386 77 × 10¹² C m⁻³ (CODATA 2022 recommended value, NIST)	v1
atomic unit of current atomic unit of current = 6.623 618 237 5082 × 10⁻³ A (CODATA 2022 recommended value, NIST)	v1
atomic unit of electric dipole mom. atomic unit of electric dipole mom. = 8.478 353 6198 × 10⁻³⁰ C m (CODATA 2022 recommended value, NIST)	v2
atomic unit of electric field atomic unit of electric field = 5.142 206 751 12 × 10¹¹ V m⁻¹ (CODATA 2022 recommended value, NIST)	v1
atomic unit of electric field gradient atomic unit of electric field gradient = 9.717 362 4424 × 10²¹ V m⁻² (CODATA 2022 recommended value, NIST)	v1
atomic unit of electric polarizability atomic unit of electric polarizability = 1.648 777 272 12 × 10⁻⁴¹ C² m² J⁻¹ (CODATA 2022 recommended value, NIST)	v1
atomic unit of electric potential atomic unit of electric potential = 27.211 386 245 981 V (CODATA 2022 recommended value, NIST)	v1
atomic unit of electric quadrupole mom. atomic unit of electric quadrupole mom. = 4.486 551 5185 × 10⁻⁴⁰ C m² (CODATA 2022 recommended value, NIST)	v2
atomic unit of energy atomic unit of energy = 4.359 744 722 2060 × 10⁻¹⁸ J (CODATA 2022 recommended value, NIST)	v1
atomic unit of force atomic unit of force = 8.238 723 5038 × 10⁻⁸ N (CODATA 2022 recommended value, NIST)	v1
atomic unit of length atomic unit of length = 5.291 772 105 44 × 10⁻¹¹ m (CODATA 2022 recommended value, NIST)	v1
atomic unit of mag. dipole mom. atomic unit of mag. dipole mom. = 1.854 802 013 15 × 10⁻²³ J T⁻¹ (CODATA 2022 recommended value, NIST)	v2
atomic unit of mag. flux density atomic unit of mag. flux density = 2.350 517 570 77 × 10⁵ T (CODATA 2022 recommended value, NIST)	v2
atomic unit of magnetizability atomic unit of magnetizability = 7.891 036 5794 × 10⁻²⁹ J T⁻² (CODATA 2022 recommended value, NIST)	v1
atomic unit of mass atomic unit of mass = 9.109 383 7139 × 10⁻³¹ kg (CODATA 2022 recommended value, NIST)	v1
atomic unit of momentum atomic unit of momentum = 1.992 851 915 45 × 10⁻²⁴ kg m s⁻¹ (CODATA 2022 recommended value, NIST)	v1
atomic unit of permittivity atomic unit of permittivity = 1.112 650 056 20 × 10⁻¹⁰ F m⁻¹ (CODATA 2022 recommended value, NIST)	v1
atomic unit of time atomic unit of time = 2.418 884 326 5864 × 10⁻¹⁷ s (CODATA 2022 recommended value, NIST)	v1
atomic unit of velocity atomic unit of velocity = 2.187 691 262 16 × 10⁶ m s⁻¹ (CODATA 2022 recommended value, NIST)	v1
Avogadro constant Avogadro constant = 6.022 140 76 × 10²³ mol⁻¹ (CODATA 2022 recommended value, NIST)	v2
Bohr magneton Bohr magneton = 9.274 010 0657 × 10⁻²⁴ J T⁻¹ (CODATA 2022 recommended value, NIST)	v2
Bohr magneton in eV/T Bohr magneton in eV/T = 5.788 381 7982 × 10⁻⁵ eV T⁻¹ (CODATA 2022 recommended value, NIST)	v1
Bohr magneton in Hz/T Bohr magneton in Hz/T = 1.399 624 491 71 × 10¹⁰ Hz T⁻¹ (CODATA 2022 recommended value, NIST)	v2
Bohr magneton in inverse meter per tesla Bohr magneton in inverse meter per tesla = 46.686 447 719 m⁻¹ T⁻¹ (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.