Electronvolts to Kilojoules Converter
Convert electronvolts (eV) to kilojoules (kJ)
Result
1.6021766 × 10⁻²² kJ
Kilojoules
1 eV = 1.6021766 × 10⁻²² kJ
1 eV in other units
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How to convert electronvolts to kilojoules
There are 6.241509 × 10²¹ electronvolts in one kilojoule, so divide the number of electronvolts by 6.241509 × 10²¹.
kJ = eV ÷ 6.241509 × 10²¹
1 eV = 1.602177 × 10⁻²² kJ · 1 kJ = 6.241509 × 10²¹ eV
Worked example
To convert 5 electronvolts to kilojoules: 5 eV ÷ 6.241509 × 10²¹ = 8.010883 × 10⁻²² kJ.
About electronvolts (eV)
An electronvolt is the energy an electron gains across one volt, used in atomic and particle physics.
About kilojoules (kJ)
A kilojoule is 1,000 J. Food labels in many countries show energy in kJ alongside kcal.
More conversions
Electronvolts to other units
Frequently asked questions
How many kilojoules are in one electronvolt?
One electronvolt equals 1.602177 × 10⁻²² kilojoules.
How many electronvolts are in one kilojoule?
One kilojoule equals 6.241509 × 10²¹ electronvolts.
How do I convert electronvolts to kilojoules?
Use the formula kJ = eV ÷ 6.241509 × 10²¹. For example, 5 eV ÷ 6.241509 × 10²¹ = 8.010883 × 10⁻²² kJ.