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Joules to Electronvolts Converter

1 J = 6.241509074 × 10¹⁸ eV. Type any value to convert joules to electronvolts.

1 J = 6.241509074 × 10¹⁸ eV

Formula: eV = J × 6.241509074 × 10¹⁸

Common values
Decimals
In every unit 12 units
Joule (J) 1 J
Kilojoule (kJ) 0.001 kJ
Megajoule (MJ) 0.000001 MJ
Calorie (cal) 0.2390057361 cal
Kilocalorie (kcal) 0.0002390057361 kcal
Watt-hour (Wh) 0.0002777777778 Wh
Kilowatt-hour (kWh) 2.777777778 × 10⁻⁷ kWh
Electronvolt (eV) 6.241509074 × 10¹⁸ eV
British thermal unit (BTU) 0.0009478171203 BTU
Therm (thm) 9.48043428 × 10⁻⁹ thm
Foot-pound (ft·lbf) 0.7375621493 ft·lbf
Erg (erg) 10,000,000 erg

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If you continue, the file is uploaded over an encrypted connection and converted on our server. You can keep using the site meanwhile. The original is deleted as soon as it is converted; the result is kept for 6 hours so you can download it, and you can delete it at any time. Files are never shared or used for anything else.

Calculated in your browser – nothing you type is sent anywhere. Privacy details

Joules to electronvolts table

Formula: eV = J × 6.241509074 × 10¹⁸

Joule (J)Electronvolt (eV)
0.1 J6.241509074 × 10¹⁷ eV
0.25 J1.560377269 × 10¹⁸ eV
0.5 J3.120754537 × 10¹⁸ eV
1 J6.241509074 × 10¹⁸ eV
2 J1.248301815 × 10¹⁹ eV
3 J1.872452722 × 10¹⁹ eV
4 J2.49660363 × 10¹⁹ eV
5 J3.120754537 × 10¹⁹ eV
6 J3.744905445 × 10¹⁹ eV
7 J4.369056352 × 10¹⁹ eV
8 J4.99320726 × 10¹⁹ eV
9 J5.617358167 × 10¹⁹ eV
10 J6.241509074 × 10¹⁹ eV
12 J7.489810889 × 10¹⁹ eV
15 J9.362263612 × 10¹⁹ eV
20 J1.248301815 × 10²⁰ eV
25 J1.560377269 × 10²⁰ eV
30 J1.872452722 × 10²⁰ eV
40 J2.49660363 × 10²⁰ eV
50 J3.120754537 × 10²⁰ eV
60 J3.744905445 × 10²⁰ eV
75 J4.681131806 × 10²⁰ eV
100 J6.241509074 × 10²⁰ eV
150 J9.362263612 × 10²⁰ eV
200 J1.248301815 × 10²¹ eV
250 J1.560377269 × 10²¹ eV
500 J3.120754537 × 10²¹ eV
1,000 J6.241509074 × 10²¹ eV

How to use: Joules to Electronvolts

  1. 1 Type the value in joules.
  2. 2 The result in electronvolts appears at once – or type in the electronvolts field to convert back.
  3. 3 Pick a common value, round to fewer decimals or swap the units with one click.
  4. 4 Copy the result, or open “In every unit” to see the value in all units of energy.

About this tool

Joule (J) is a unit of energy (SI). Electronvolt (eV) is a unit of energy; 1 eV = 1.602176634 × 10⁻¹⁹ J.

To convert joules to electronvolts, multiply the value by 6.241509074 × 10¹⁸ (eV = J × 6.241509074 × 10¹⁸). Example: 100 J = 6.241509074 × 10²⁰ eV.

Calculated in your browser – nothing you type is sent anywhere.

Frequently asked questions

How do I convert joules to electronvolts?

To convert joules to electronvolts, multiply the value by 6.241509074 × 10¹⁸: eV = J × 6.241509074 × 10¹⁸. For example 100 J = 6.241509074 × 10²⁰ eV.

What is 1 J in electronvolts?

1 J = 6.241509074 × 10¹⁸ eV. The other way round, 1 eV = 1.602176634 × 10⁻¹⁹ J.

How exact is the result?

The converter uses the official definitions of both units and shows up to 10 significant digits; choose 0–6 decimals to round. Both units are defined exactly in terms of each other, so the factor itself is exact.

Can I convert other units of energy here?

Yes – choose any of the 12 units of energy in the From and To lists, or switch to another measurement at the top.

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