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.
Electronvolts to Gigajoules
Convert Electronvolt (eV) to Gigajoule (GJ) instantly with an exact formula, conversion table, and FAQ.
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Convert electronvolts (eV) to gigajoules (GJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga prefix.
GJ = eV × 1.602176634e-28
Results update instantly for Electronvolts to Gigajoules conversions.
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Formula
GJ = eV × 1.602176634e-28
eV = GJ × 6.241509074e+27
Conversion table
| 1 eV | 1.602177e-28 GJ |
| 5 eV | 8.010883e-28 GJ |
| 10 eV | 1.602177e-27 GJ |
| 20 eV | 3.204353e-27 GJ |
| 50 eV | 8.010883e-27 GJ |
| 100 eV | 1.602177e-26 GJ |
| 500 eV | 8.010883e-26 GJ |
| 1000 eV | 1.602177e-25 GJ |
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How the formula works
Both electronvolt and gigajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in electronvolts by 1.602176634e-28 to get gigajoules. To reverse the conversion, multiply a gigajoule value by 6.241509074e+27 to get back to electronvolts.
Frequently asked questions
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.
What is Gigajoule (GJ)?
A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga prefix.
How do I convert electronvolts to gigajoules?
Multiply the electronvolt value by 1.602176634e-28 to get the equivalent in gigajoules. For example, 5 eV × 1.602176634e-28 = 8.010883e-28 GJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.602176634e-28 is an exact, non-rounded value.
Can I convert gigajoules back to electronvolts?
Yes. Divide the gigajoule value by 1.602176634e-28, or multiply it by 6.241509074e+27, to get electronvolts.
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About converting electronvolts to gigajoules
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. A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga prefix.
Use this calculator to move between electronvolts and gigajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.