J to eV Converter

Convert joules and electron volts values instantly.

Free online bidirectional converter with swap button, quick reference table, and copy results.

No signup required.

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Frequently Asked Questions

Common questions about the J to eV Converter

Energy is the capacity to do work, measured in joules (SI unit), calories, BTU, kilowatt-hours, and other units depending on the application.
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Sources & References

International System of Units (SI): energy, work and heat

Energy, work and heat is measured in the joule (J); 1 cal = 4.184 J. Conversions between SI and other units use exact, internationally agreed factors maintained by NIST.
→Source: NIST — International System of Units (SI)

International System of Units (SI)

Authoritative definitions for energy, work and heat, from the BIPM SI Brochure (9th edition), the defining reference for the SI.
→Source: BIPM — SI Brochure (9th ed.)

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