Watt-hours to Electronvolts Converter

To convert a measurement in watt-hours to electronvolts, multiply the value by 2.246943e+22. The conversion factor comes from the relationship between both units and the joule.

For example, to convert 5 Wh to electronvolts: 5 × 2.246943e+22 = 1.123472e+23 eV.

A watt-hour is the energy delivered by one watt of power over one hour, equal to 3,600 joules. The watt-hour emerged with the electrical industry as a practical measure of energy use over time. It underpins the kilowatt-hour that appears on electricity bills worldwide.

Common uses of watt-hours include: Battery capacity ratings; Small electronics energy use; Solar panel and storage sizing; Portable power station specifications.

An electronvolt is the energy gained by one electron moving through a potential difference of one volt, equal to about 1.602 × 10⁻¹⁹ joules. The electronvolt became essential in atomic and particle physics, where joules are impractically large. Particle accelerator energies are expressed in mega-, giga-, and tera-electronvolts.

Common uses of electronvolts include: Atomic and particle physics; Semiconductor band-gap energies; Photon and X-ray energy; Chemistry ionization energies.

Here are some common values converted:

1 Wh = 2.246943e+22 eV 5 Wh = 1.123472e+23 eV 10 Wh = 2.246943e+23 eV 50 Wh = 1.123472e+24 eV 100 Wh = 2.246943e+24 eV