Joule to Electronvolt

1 J = 6.2415091 × 10¹⁸ eV

Value

From

Precision & format

Significant figures

Notation

1 J equals

6.241509074 × 10¹⁸eV

All 21 units

JouleJ
1
KilojoulekJ
0.001
MegajouleMJ
0.000001
GigajouleGJ
1 × 10⁻⁹
MillijoulemJ
1,000
Calorie (thermochemical)cal
exactly 4.184 J
0.2390057361
Kilocalorie (thermochemical)kcal
food Calorie
0.0002390057361
Calorie (IT)cal (IT)
International Table
0.2388458966
Kilocalorie (IT)kcal (IT)
0.0002388458966
Watt-hourWh
0.0002777777778
Kilowatt-hourkWh
2.777777778 × 10⁻⁷
Megawatt-hourMWh
2.777777778 × 10⁻¹⁰
BTU (IT)BTU
International Table
0.0009478171203
BTU (thermochemical)BTU (th)
0.0009484514148
Therm (US)thm
100 000 BTU
9.48043428 × 10⁻⁹
Foot-poundft·lbf
0.7375621493
Ergerg
10,000,000
ElectronvolteV
6.241509074 × 10¹⁸
KiloelectronvoltkeV
6.241509074 × 10¹⁵
MegaelectronvoltMeV
6,241,509,074,000
Tonne of oil equivalenttoe
2.388458966 × 10⁻¹¹

Joule to Electronvolt table

Common Joule values converted to Electronvolt
Joule (J)	Electronvolt (eV)
1	6.2415091 × 10¹⁸
2	1.2483018 × 10¹⁹
5	3.1207545 × 10¹⁹
10	6.2415091 × 10¹⁹
20	1.2483018 × 10²⁰
50	3.1207545 × 10²⁰
100	6.2415091 × 10²⁰
250	1.5603773 × 10²¹
500	3.1207545 × 10²¹
1,000	6.2415091 × 10²¹

How the conversion works

Multiply the joule figure by 6.241509074 × 10¹⁸ to get electronvolt. Every factor on this site is anchored to the SI base unit for energy, so the same number is used everywhere it appears.

Going the other way, 1 eV = 1.6021766 × 10⁻¹⁹ J — see electronvolt to joule.

See all 21 energy units →