Convert Electronvolts to Gigajoules
Convert Electronvolts (eV) to Gigajoules (GJ) instantly and accurately.
Conversion Formula
GJ = eV × 1.602176634e-28
About Electronvolts
An electronvolt (eV) is the kinetic energy gained by one electron accelerated through 1 volt - exactly 1.602176634 × 10⁻¹⁹ J (fixed by the 2019 SI revision). It is the natural energy unit of atomic and particle physics: visible light photons carry 1.7-3.1 eV; hydrogen ionisation requires 13.6 eV; X-ray photons span 100 eV-100 keV; protons at the LHC reach 6.5 TeV. Rest masses use eV/c²: electron 0.511 MeV, proton 938.3 MeV, Higgs boson 125 GeV. Nuclear binding energy peaks at ~8 MeV/nucleon for iron-56. 1 eV = 1.602176634 × 10⁻¹⁹ J.
About Gigajoules
A gigajoule (GJ) is 10⁹ J - the scale of fossil-fuel commodity volumes. One barrel of crude oil contains ~5.80 GJ; one metric tonne of hard coal ~29.3 GJ. Canadian energy bills express household consumption in GJ: average Canadian households use ~100-130 GJ/year. A 1 GW power plant at 33% efficiency burns ~10.9 GJ/h of fuel to generate 1 GWh = 3.6 GJ of electricity. Detonation of 1 tonne of TNT releases 4.184 GJ. 1 GJ = 10⁹ J = 277.78 kWh = 947,817 BTU = 9.4782 therms.
Quick Reference Table
| Electronvolts (eV) | Gigajoules (GJ) |
|---|---|
| 1 eV | 1.602 × 10-28 GJ |
| 2 eV | 3.204 × 10-28 GJ |
| 5 eV | 8.011 × 10-28 GJ |
| 10 eV | 1.602 × 10-27 GJ |
| 25 eV | 4.005 × 10-27 GJ |
| 50 eV | 8.011 × 10-27 GJ |
| 100 eV | 1.602 × 10-26 GJ |