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Electronvolts to joules

1 electronvolt in joules
1 eV = 1.602 × 10^-19 J
J = eV × 1.602176634 × 10^-19

To convert electronvolts to joules, multiply by 1.602176634 × 10^-19. The table below gives the values people look up most often, and the converter works for any number.

Electronvolts to joules table

Common electronvolt values converted to joules.
Electronvolts Joules
1 eV 1.602 × 10^-19
2 eV 3.204 × 10^-19
3 eV 4.807 × 10^-19
4 eV 6.409 × 10^-19
5 eV 8.011 × 10^-19
10 eV 1.602 × 10^-18
15 eV 2.403 × 10^-18
20 eV 3.204 × 10^-18
25 eV 4.005 × 10^-18
30 eV 4.807 × 10^-18
40 eV 6.409 × 10^-18
50 eV 8.011 × 10^-18
75 eV 1.202 × 10^-17
100 eV 1.602 × 10^-17
250 eV 4.005 × 10^-17
500 eV 8.011 × 10^-17
1,000 eV 1.602 × 10^-16

How the conversion works

The relationship is J = eV × 1.602176634 × 10^-19. Both units measure energy, so the conversion is a fixed factor that never changes.

Common questions

How many joules are in one electronvolt?
One electronvolt equals 1.602 × 10^-19 joules. J = eV × 1.602176634 × 10^-19.
How do you convert electronvolts to joules?
Use J = eV × 1.602176634 × 10^-19. So 10 eV is 1.602 × 10^-18 J.
How many electronvolts are in one joule?
One joule equals 6.2415091 × 10^18 electronvolts, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked