Electronvolts (eV) to Ergs Converter
Enter a value to instantly convert between energy units.
1 Electronvolt = 1.6022e-12 Erg
Key Formulas
Kilocalorie → Kilojoule
kJ = kcal × 4.184Kilojoule → Kilocalorie
kcal = kJ × 0.239006Kilowatt-Hour → Joule
J = kWh × 3600000Joule → Kilowatt-Hour
kWh = J × 2.77778e-7Formula
erg = eV × 1.602177e-12One electronvolt equals 1.60 × 10⁻¹² ergs. Both are tiny-scale units: eV is used in atomic/particle physics (bond energies, ionization), and erg is the CGS unit for astrophysics (stellar energy, cosmic rays). Converting between them is useful when analyzing high-energy phenomena that span both domains — for example, cosmic ray interactions or stellar nucleosynthesis.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
A particle detector measures a cosmic ray: 10¹⁵ eV = 1,602 erg — bridging particle and astrophysical scales.
1000000000000000 eV = 1602 erg
A ultra-high-energy cosmic ray: 10²⁰ eV = 160,200,000 erg — enormous by atomic standards, still tiny by macroscopic measures.
100000000000000000000 eV = 160200000 erg
Hydrogen ionization energy: 13.6 eV = 2.18 × 10⁻¹¹ erg — fundamental constant in both eV and CGS units.
13.6 eV = 2.18e-11 erg
A nuclear reaction releases 1 MeV (10⁶ eV) = 1.602 × 10⁻⁶ erg — showing how particle and CGS scales overlap.
1000000 eV = 0.000001602 erg