Convert Electronvolts to Terajoules
Convert Electronvolts (eV) to Terajoules (TJ) instantly and accurately.
Conversion Formula
TJ = eV × 1.602176634e-31
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 Terajoules
A terajoule (TJ) is 10¹² J - the scale of nuclear yields in the kiloton range and large industrial accidents. One kiloton of TNT = 4.184 TJ; the Hiroshima bomb (15 kt) released ~62.8 TJ. The Halifax Explosion (1917) released ~3 TJ. A 500 MW coal plant consumes ~51.4 TJ/h of thermal input. Daily primary energy of Denmark is ~250-300 TJ; the UK ~3,800 TJ/day. A 1 GW nuclear reactor at 90% capacity factor generates ~77.7 TJ/day. 1 TJ = 10¹² J = 277,778 kWh = 277.78 MWh = 23.88 ktoe.
Quick Reference Table
| Electronvolts (eV) | Terajoules (TJ) |
|---|---|
| 1 eV | 1.602 × 10-31 TJ |
| 2 eV | 3.204 × 10-31 TJ |
| 5 eV | 8.011 × 10-31 TJ |
| 10 eV | 1.602 × 10-30 TJ |
| 25 eV | 4.005 × 10-30 TJ |
| 50 eV | 8.011 × 10-30 TJ |
| 100 eV | 1.602 × 10-29 TJ |