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 169–192 of 355 documents

Document	Version
joule-electron volt relationship joule-electron volt relationship = 6.241 509 074… × 10¹⁸ eV (CODATA 2022 recommended value, NIST)	v1
joule-hartree relationship joule-hartree relationship = 2.293 712 278 3969 × 10¹⁷ E_h (CODATA 2022 recommended value, NIST)	v1
joule-hertz relationship joule-hertz relationship = 1.509 190 179… × 10³³ Hz (CODATA 2022 recommended value, NIST)	v1
joule-inverse meter relationship joule-inverse meter relationship = 5.034 116 567… × 10²⁴ m⁻¹ (CODATA 2022 recommended value, NIST)	v1
joule-kelvin relationship joule-kelvin relationship = 7.242 970 516… × 10²² K (CODATA 2022 recommended value, NIST)	v1
joule-kilogram relationship joule-kilogram relationship = 1.112 650 056… × 10⁻¹⁷ kg (CODATA 2022 recommended value, NIST)	v1
kelvin-atomic mass unit relationship kelvin-atomic mass unit relationship = 9.251 087 2884 × 10⁻¹⁴ u (CODATA 2022 recommended value, NIST)	v1
kelvin-electron volt relationship kelvin-electron volt relationship = 8.617 333 262… × 10⁻⁵ eV (CODATA 2022 recommended value, NIST)	v1
kelvin-hartree relationship kelvin-hartree relationship = 3.166 811 563 4564 × 10⁻⁶ E_h (CODATA 2022 recommended value, NIST)	v1
kelvin-hertz relationship kelvin-hertz relationship = 2.083 661 912… × 10¹⁰ Hz (CODATA 2022 recommended value, NIST)	v1
kelvin-inverse meter relationship kelvin-inverse meter relationship = 69.503 480 04… m⁻¹ (CODATA 2022 recommended value, NIST)	v1
kelvin-joule relationship kelvin-joule relationship = 1.380 649 × 10⁻²³ J (CODATA 2022 recommended value, NIST)	v1
kelvin-kilogram relationship kelvin-kilogram relationship = 1.536 179 187… × 10⁻⁴⁰ kg (CODATA 2022 recommended value, NIST)	v1
kilogram-atomic mass unit relationship kilogram-atomic mass unit relationship = 6.022 140 7537 × 10²⁶ u (CODATA 2022 recommended value, NIST)	v1
kilogram-electron volt relationship kilogram-electron volt relationship = 5.609 588 603… × 10³⁵ eV (CODATA 2022 recommended value, NIST)	v1
kilogram-hartree relationship kilogram-hartree relationship = 2.061 485 788 7415 × 10³⁴ E_h (CODATA 2022 recommended value, NIST)	v1
kilogram-hertz relationship kilogram-hertz relationship = 1.356 392 489… × 10⁵⁰ Hz (CODATA 2022 recommended value, NIST)	v1
kilogram-inverse meter relationship kilogram-inverse meter relationship = 4.524 438 335… × 10⁴¹ m⁻¹ (CODATA 2022 recommended value, NIST)	v1
kilogram-joule relationship kilogram-joule relationship = 8.987 551 787… × 10¹⁶ J (CODATA 2022 recommended value, NIST)	v1
kilogram-kelvin relationship kilogram-kelvin relationship = 6.509 657 260… × 10³⁹ K (CODATA 2022 recommended value, NIST)	v1
lattice parameter of silicon lattice parameter of silicon = 5.431 020 511 × 10⁻¹⁰ m (CODATA 2022 recommended value, NIST)	v1
lattice spacing of ideal Si (220) lattice spacing of ideal Si (220) = 1.920 155 716 × 10⁻¹⁰ m (CODATA 2022 recommended value, NIST)	v1
Loschmidt constant (273.15 K, 100 kPa) Loschmidt constant (273.15 K, 100 kPa) = 2.651 645 804… × 10²⁵ m⁻³ (CODATA 2022 recommended value, NIST)	v1
Loschmidt constant (273.15 K, 101.325 kPa) Loschmidt constant (273.15 K, 101.325 kPa) = 2.686 780 111… × 10²⁵ m⁻³ (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.