Convert Electronvolts to Picojoules
Convert Electronvolts (eV) to Picojoules (pJ) instantly and accurately.
Conversion Formula
pJ = eV × 1.602176634e-7
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 Picojoules
A picojoule (pJ) is 10⁻¹² J - the scale of laser pulses in scientific instruments and chip-level capacitor storage. A 1 pF capacitor charged to 1 V stores exactly 0.5 pJ. Laser pulse energies in OCT and ultrafast spectroscopy are typically 1-1,000 pJ. Single-photon SNSPD detector dead-time dissipates 1-100 pJ per event. Phase-change memory cells (PCM, ReRAM) switch at 10-100 pJ per state transition, setting a lower bound on non-volatile memory energy efficiency. 1 pJ = 10⁻¹² J = 6.242 MeV.
Quick Reference Table
| Electronvolts (eV) | Picojoules (pJ) |
|---|---|
| 1 eV | 1.602 × 10-7 pJ |
| 2 eV | 3.204 × 10-7 pJ |
| 5 eV | 8.011 × 10-7 pJ |
| 10 eV | 1.602 × 10-6 pJ |
| 25 eV | 4.005 × 10-6 pJ |
| 50 eV | 8.011 × 10-6 pJ |
| 100 eV | 1.602 × 10-5 pJ |