Electron magnetic moment = -9.284 764 6917 × 10−24 J·T⁻¹

Value
-9.284 764 6917 × 10−24
Unit
J·T⁻¹
Uncertainty
0.000 000 0029 × 10⁻²⁴
Copy-ready
-9.2847646917e-24

Magnetic dipole moment of the electron.

Sets how strongly the particle lines up in a magnetic field — the quantity behind NMR, MRI and precision spectroscopy. A negative sign means the moment points opposite to the spin. Its ratios to the Bohr and nuclear magnetons and to other particles' moments are listed beneath.

The same quantity, other ways NIST lists it

Quantity (NIST name)ValueUnitUncertainty
Electron-deuteron magnetic moment ratio-2143.923 4921(dimensionless)0.000 0056
Electron magnetic moment to Bohr magneton ratio-1.001 159 652 180 46(dimensionless)0.000 000 000 000 18
Electron magnetic moment to nuclear magneton ratio-1838.281 971 877(dimensionless)0.000 000 032
Electron-muon magnetic moment ratio206.766 9881(dimensionless)0.000 0046
Electron-neutron magnetic moment ratio960.920 48(dimensionless)0.000 23
Electron-proton magnetic moment ratio-658.210 687 89(dimensionless)0.000 000 19
Electron to shielded helion magnetic moment ratio864.058 239 86(dimensionless)0.000 000 70
Electron to shielded proton magnetic moment ratio-658.227 5856(dimensionless)0.000 0027

NIST, Fundamental Physical Constants — Complete Listing (2022 CODATA adjustment), retrieved 2026-07-26.

Magnetic moments, g-factors and gyromagnetic ratios

Deuteron magnetic momentElectron magnetic momentElectron g factorElectron gyromagnetic ratioElectron magnetic moment anomalyHelion g factorHelion magnetic momentHelion shielding shiftMuon g factorMuon magnetic momentMuon magnetic moment anomalyNeutron magnetic momentNeutron g factorNeutron gyromagnetic ratioProton g factorProton gyromagnetic ratioProton magnetic momentProton magnetic shielding correctionShielded helion gyromagnetic ratioShielded helion magnetic momentShielded proton gyromagnetic ratioShielded proton magnetic momentShielding difference of d and p in HDShielding difference of t and p in HTTriton g factorTriton magnetic moment

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All physical constants

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