MJ to eV Converter

How to convert megajoules to electronvolts

FormulaeV = MJ × 6.241509074×10²⁴

Multiply the value in megajoules by 6.241509074×10²⁴. To go the other way, multiply by 1.602176634×10⁻²⁵ (or divide by 6.241509074×10²⁴).

A megajoule is larger than an electronvolt: one megajoule contains 6.241509074×10²⁴ electronvolts.

Worked examples

1 megajoule1 MJ × 6.241509074×10²⁴ = 6.241509074×10²⁴ eV
5 megajoules5 MJ × 6.241509074×10²⁴ = 3.120754537×10²⁵ eV
10 megajoules10 MJ × 6.241509074×10²⁴ = 6.241509074×10²⁵ eV
20 megajoules20 MJ × 6.241509074×10²⁴ = 1.248301815×10²⁶ eV
100 megajoules100 MJ × 6.241509074×10²⁴ = 6.241509074×10²⁶ eV

Megajoules to electronvolts conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Megajoules to electronvolts: 0.1–10 MJ
Megajoules (MJ)	Electronvolts (eV)
0.1 MJ	6.2415091×10²³ eV
0.25 MJ	1.5603773×10²⁴ eV
0.5 MJ	3.1207545×10²⁴ eV
1 MJ	6.2415091×10²⁴ eV
2 MJ	1.2483018×10²⁵ eV
3 MJ	1.8724527×10²⁵ eV
4 MJ	2.4966036×10²⁵ eV
5 MJ	3.1207545×10²⁵ eV
6 MJ	3.7449054×10²⁵ eV
7 MJ	4.3690564×10²⁵ eV
8 MJ	4.9932073×10²⁵ eV
9 MJ	5.6173582×10²⁵ eV
10 MJ	6.2415091×10²⁵ eV

Megajoules to electronvolts: 12–1,000 MJ
Megajoules (MJ)	Electronvolts (eV)
12 MJ	7.4898109×10²⁵ eV
15 MJ	9.3622636×10²⁵ eV
20 MJ	1.2483018×10²⁶ eV
25 MJ	1.5603773×10²⁶ eV
30 MJ	1.8724527×10²⁶ eV
40 MJ	2.4966036×10²⁶ eV
50 MJ	3.1207545×10²⁶ eV
75 MJ	4.6811318×10²⁶ eV
100 MJ	6.2415091×10²⁶ eV
250 MJ	1.5603773×10²⁷ eV
500 MJ	3.1207545×10²⁷ eV
1,000 MJ	6.2415091×10²⁷ eV

About the units

Megajoule (MJ)

The megajoule (MJ) is a unit of energy in the International System of Units (SI). One megajoule equals 1,000,000 joules (J).

Electronvolt (eV)

The energy an electron gains across one volt: exactly 1.602176634 × 10⁻¹⁹ J. One electronvolt equals 1.602176634×10⁻¹⁹ joules (J).

Frequently asked questions

How many electronvolts are in one megajoule?

There are 6.241509074×10²⁴ electronvolts in one megajoule, and this value is exact by definition.

How do I convert megajoules to electronvolts?

Multiply the number of megajoules by 6.241509074×10²⁴. For example, 10 MJ × 6.241509074×10²⁴ = 6.241509074×10²⁵ eV.

How many megajoules are in one electronvolt?

One electronvolt equals 1.602176634×10⁻²⁵ megajoules. That is the reverse factor, 1 ÷ 6.241509074×10²⁴.

What is 10 megajoules in electronvolts?

10 MJ = 6.241509074×10²⁵ eV.

Is this MJ to eV converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.