Convert Electronvolts to Microjoules
Convert Electronvolts (eV) to Microjoules (µJ) instantly and accurately.
Conversion Formula
µJ = eV × 1.602176634e-13
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 Microjoules
A microjoule (µJ) is 10⁻⁶ J - the scale of precision laser ablation, ESD damage events, and individual LIDAR pulses. LASIK eye surgery delivers 0.5-2 µJ per pulse at 193 nm, ablating ~0.25 µm of corneal tissue per pulse. ESD events that destroy IC gates correspond to 1-1,000 µJ; the Human Body Model test discharges ~500 µJ at 2 kV. Q-switched microchip laser pulses for rangefinding are 1-100 µJ. The kinetic energy of a 1 mg grain of sand falling 10 cm is mgh ≈ 0.98 µJ. 1 µJ = 10⁻⁶ J.
Quick Reference Table
| Electronvolts (eV) | Microjoules (µJ) |
|---|---|
| 1 eV | 1.602 × 10-13 µJ |
| 2 eV | 3.204 × 10-13 µJ |
| 5 eV | 8.011 × 10-13 µJ |
| 10 eV | 1.602 × 10-12 µJ |
| 25 eV | 4.005 × 10-12 µJ |
| 50 eV | 8.011 × 10-12 µJ |
| 100 eV | 1.602 × 10-11 µJ |