Shielded proton magnetic moment = 1.410 570 5830 × 10−26 J·T⁻¹

Value
1.410 570 5830 × 10−26
Unit
J·T⁻¹
Uncertainty
0.000 000 0058 × 10⁻²⁶
Copy-ready
1.4105705830e-26

Magnetic dipole moment of the proton as measured inside a spherical water sample, the reference NMR magnetometers are calibrated against.

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
Shielded proton magnetic moment to Bohr magneton ratio1.520 993 1551 × 10−3(dimensionless)0.000 000 0062 × 10⁻³
Shielded proton magnetic moment to nuclear magneton ratio2.792 775 648(dimensionless)0.000 000 011

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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