Convert Electronvolts to Kilowatt-Hours
Convert Electronvolts (eV) to Kilowatt-Hours (kWh) instantly and accurately.
Conversion Formula
kWh = eV × 4.450490650e-26
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 Kilowatt-Hours
A kilowatt-hour (kWh) is the energy consumed by 1 kW for one hour - exactly 3,600,000 J = 3.6 MJ. All domestic electricity meters bill in kWh. Appliance benchmarks: fridge 180-250 kWh/year; washing machine 0.5-2.0 kWh/cycle; air conditioner 1-3 kWh/h. EVs consume 13-25 kWh/100 km; the Lucid Air achieves ~15.9 kWh/100 km (WLTP). Producing 1 tonne of primary aluminium requires ~13,000-15,000 kWh. Global electricity generation is ~29,165 TWh ≈ 2.9 × 10¹³ kWh/year. 1 kWh = 3.6 MJ = 3,412.1 BTU = 859.85 kcal.
Quick Reference Table
| Electronvolts (eV) | Kilowatt-Hours (kWh) |
|---|---|
| 1 eV | 4.45 × 10-26 kWh |
| 2 eV | 8.901 × 10-26 kWh |
| 5 eV | 2.225 × 10-25 kWh |
| 10 eV | 4.45 × 10-25 kWh |
| 25 eV | 1.113 × 10-24 kWh |
| 50 eV | 2.225 × 10-24 kWh |
| 100 eV | 4.45 × 10-24 kWh |