How many joules are in an electronvolt?

One electronvolt is exactly 1.602176634×10⁻¹⁹ joules (SI definition).

Detailed answer

The electronvolt is the energy gained by one elementary charge crossing 1 V. Since 2019, the joule value is exact via the fixed elementary charge.

Relationship context

Particle physics, band gaps, and chemistry bond energies often use eV or keV alongside joules.

Quick conversion table

Electronvolt (ev)Joule (j)
0.10
10
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90
Electronvolt (ev)Joule (j)
100
200
300
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500
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1000

More Electronvolts converters

Dedicated pages from Electronvolt to every other hub energy unit (kilocalorie, kilowatt-hour, calorie, joule, kilojoule, watt-hour, BTU, electronvolt).