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 193–216 of 355 documents

Document	Version
luminous efficacy luminous efficacy = 683 lm W⁻¹ (CODATA 2022 recommended value, NIST)	v1
mag. flux quantum mag. flux quantum = 2.067 833 848… × 10⁻¹⁵ Wb (CODATA 2022 recommended value, NIST)	v2
molar gas constant molar gas constant = 8.314 462 618… J mol⁻¹ K⁻¹ (CODATA 2022 recommended value, NIST)	v2
molar mass constant molar mass constant = 1.000 000 001 05 × 10⁻³ kg mol⁻¹ (CODATA 2022 recommended value, NIST)	v1
molar mass of carbon-12 molar mass of carbon-12 = 12.000 000 0126 × 10⁻³ kg mol⁻¹ (CODATA 2022 recommended value, NIST)	v1
molar Planck constant molar Planck constant = 3.990 312 712… × 10⁻¹⁰ J Hz⁻¹ mol⁻¹ (CODATA 2022 recommended value, NIST)	v1
molar volume of ideal gas (273.15 K, 100 kPa) molar volume of ideal gas (273.15 K, 100 kPa) = 22.710 954 64… × 10⁻³ m³ mol⁻¹ (CODATA 2022 recommended value, NIST)	v1
molar volume of ideal gas (273.15 K, 101.325 kPa) molar volume of ideal gas (273.15 K, 101.325 kPa) = 22.413 969 54… × 10⁻³ m³ mol⁻¹ (CODATA 2022 recommended value, NIST)	v1
molar volume of silicon molar volume of silicon = 1.205 883 199 × 10⁻⁵ m³ mol⁻¹ (CODATA 2022 recommended value, NIST)	v1
Molybdenum x unit Molybdenum x unit = 1.002 099 52 × 10⁻¹³ m (CODATA 2022 recommended value, NIST)	v1
muon Compton wavelength muon Compton wavelength = 1.173 444 110 × 10⁻¹⁴ m (CODATA 2022 recommended value, NIST)	v1
muon g factor muon g factor = -2.002 331 841 23 (CODATA 2022 recommended value, NIST)	v1
muon mag. mom. muon mag. mom. = -4.490 448 30 × 10⁻²⁶ J T⁻¹ (CODATA 2022 recommended value, NIST)	v2
muon mag. mom. anomaly muon mag. mom. anomaly = 1.165 920 62 × 10⁻³ (CODATA 2022 recommended value, NIST)	v2
muon mag. mom. to Bohr magneton ratio muon mag. mom. to Bohr magneton ratio = -4.841 970 48 × 10⁻³ (CODATA 2022 recommended value, NIST)	v2
muon mag. mom. to nuclear magneton ratio muon mag. mom. to nuclear magneton ratio = -8.890 597 04 (CODATA 2022 recommended value, NIST)	v2
muon mass muon mass = 1.883 531 627 × 10⁻²⁸ kg (CODATA 2022 recommended value, NIST)	v2
muon mass energy equivalent muon mass energy equivalent = 1.692 833 804 × 10⁻¹¹ J (CODATA 2022 recommended value, NIST)	v1
muon mass energy equivalent in MeV muon mass energy equivalent in MeV = 105.658 3755 MeV (CODATA 2022 recommended value, NIST)	v1
muon mass in u muon mass in u = 0.113 428 9257 u (CODATA 2022 recommended value, NIST)	v1
muon molar mass muon molar mass = 1.134 289 258 × 10⁻⁴ kg mol⁻¹ (CODATA 2022 recommended value, NIST)	v1
muon-electron mass ratio muon-electron mass ratio = 206.768 2827 (CODATA 2022 recommended value, NIST)	v1
muon-neutron mass ratio muon-neutron mass ratio = 0.112 454 5168 (CODATA 2022 recommended value, NIST)	v1
muon-proton mag. mom. ratio muon-proton mag. mom. ratio = -3.183 345 146 (CODATA 2022 recommended value, NIST)	v2

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.