A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga prefix.
Gigajoules to Electronvolts
Convert Gigajoule (GJ) to Electronvolt (eV) instantly with an exact formula, conversion table, and FAQ.
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Convert gigajoules (GJ) to electronvolts (eV) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
An electronvolt (eV) is the energy gained by a single electron accelerating through a potential difference of one volt, widely used in atomic and particle physics.
eV = GJ × 6.241509074e+27
Results update instantly for Gigajoules to Electronvolts conversions.
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Formula
eV = GJ × 6.241509074e+27
GJ = eV × 1.602176634e-28
Conversion table
| 1 GJ | 6.241509e+27 eV |
| 5 GJ | 3.120755e+28 eV |
| 10 GJ | 6.241509e+28 eV |
| 20 GJ | 1.248302e+29 eV |
| 50 GJ | 3.120755e+29 eV |
| 100 GJ | 6.241509e+29 eV |
| 500 GJ | 3.120755e+30 eV |
| 1000 GJ | 6.241509e+30 eV |
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How the formula works
Both gigajoule and electronvolt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in gigajoules by 6.241509074e+27 to get electronvolts. To reverse the conversion, multiply a electronvolt value by 1.602176634e-28 to get back to gigajoules.
Frequently asked questions
What is Gigajoule (GJ)?
A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga prefix.
What is Electronvolt (eV)?
An electronvolt (eV) is the energy gained by a single electron accelerating through a potential difference of one volt, widely used in atomic and particle physics.
How do I convert gigajoules to electronvolts?
Multiply the gigajoule value by 6.241509074e+27 to get the equivalent in electronvolts. For example, 5 GJ × 6.241509074e+27 = 3.120755e+28 eV.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 6.241509074e+27 is an exact, non-rounded value.
Can I convert electronvolts back to gigajoules?
Yes. Divide the electronvolt value by 6.241509074e+27, or multiply it by 1.602176634e-28, to get gigajoules.
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About converting gigajoules to electronvolts
A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga prefix. An electronvolt (eV) is the energy gained by a single electron accelerating through a potential difference of one volt, widely used in atomic and particle physics.
Use this calculator to move between gigajoules and electronvolts accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.