A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
Megajoules to Electronvolts
Convert Megajoule (MJ) to Electronvolt (eV) instantly with an exact formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Energy calculator
Energy Converter
Convert megajoules (MJ) 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 = MJ × 6.241509074e+24
Results update instantly for Megajoules to Electronvolts conversions.
Reserved above the conversion cards and below the converter.
Formula
eV = MJ × 6.241509074e+24
MJ = eV × 1.602176634e-25
Conversion table
| 1 MJ | 6.241509e+24 eV |
| 5 MJ | 3.120755e+25 eV |
| 10 MJ | 6.241509e+25 eV |
| 20 MJ | 1.248302e+26 eV |
| 50 MJ | 3.120755e+26 eV |
| 100 MJ | 6.241509e+26 eV |
| 500 MJ | 3.120755e+27 eV |
| 1000 MJ | 6.241509e+27 eV |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both megajoule and electronvolt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in megajoules by 6.241509074e+24 to get electronvolts. To reverse the conversion, multiply a electronvolt value by 1.602176634e-25 to get back to megajoules.
Frequently asked questions
What is Megajoule (MJ)?
A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega 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 megajoules to electronvolts?
Multiply the megajoule value by 6.241509074e+24 to get the equivalent in electronvolts. For example, 5 MJ × 6.241509074e+24 = 3.120755e+25 eV.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 6.241509074e+24 is an exact, non-rounded value.
Can I convert electronvolts back to megajoules?
Yes. Divide the electronvolt value by 6.241509074e+24, or multiply it by 1.602176634e-25, to get megajoules.
Reserved between the FAQ and the article so the page stays balanced.
About converting megajoules to electronvolts
A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega 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 megajoules 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.