Proton charge to mass quotient = 9.578 833 1430 × 107 C·kg⁻¹

Value
9.578 833 1430 × 107
Unit
C·kg⁻¹
Uncertainty
0.000 000 0030 × 10⁷
Copy-ready
9.5788331430e7

The proton's charge divided by its mass, e/mₚ.

Sets proton orbits in cyclotrons, mass spectrometers and the Earth's magnetic field.

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

Electrical, thermal and X-ray constants

Angstrom starConductance quantumCopper x unitElectron charge to mass quotientFermi coupling constantFirst radiation constantHartree energyJosephson constantLattice parameter of siliconLattice spacing of ideal Si (220)Loschmidt constant (273.15 K, 101.325 kPa)Magnetic flux quantumMolar mass constantMolar mass of carbon-12Molar Planck constantMolar volume of siliconMolybdenum x unitNeutron-proton mass differenceProton charge to mass quotientQuantum of circulationSackur-Tetrode constant (1 K, 101.325 kPa)Second radiation constantVon Klitzing constantWeak mixing angleWien frequency displacement law constantW to Z mass ratio

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All physical constants

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