Quickly convert joules to electron-volts and vice versa with Examples.com. Enter your data for fast and reliable energy conversions.

J to eV

Formula: Energy in Electronvolts (eV) = Energy in Joules (J) / 1.60218e-19

Joule :

Electronvolt :

JoulesElectronvolts
16241495961752113000

eV to J

Formula: Energy in Joules (J) = Energy in Electronvolts (eV) x 1.60218e-19

Electronvolt :

Joule :

ElectronvoltsJoules
11.60218e-19

Energy Converters to Joule

Joule to KilojouleJoule to Gram CalorieJoule to Kilocalorie
Joule to Watt hourJoule to Kilowatt-hourJoule to Electronvolt
Joule to British thermal unitJoule to US ThermJoule to Foot-pound

Energy Converters to Electronvolt

Electronvolt to JouleElectronvolt to KilojouleElectronvolt to Gram Calorie
Electronvolt to KilocalorieElectronvolt to Watt hourElectronvolt to Kilowatt-hour
Electronvolt to British thermal unitElectronvolt to US ThermElectronvolt to Foot-pound

Conversion Factors:

  • Joules to Electron-Volts: 1 joule = 6.242e+18 electron-volts
  • Electron-Volts to Joules: 1 electron-volt = 1.602e-19 joules

How to Convert Joules to Electron-Volts:

To convert joules to electron-volts, divide the number of joules by 1.602e-19.

Electron-Volts = Joules/1.602e−19

Example:

Convert 3e-18 joules to electron-volts.

Electron-Volts = 3e−18/1.602e−19 = 18.73 eV

How to Convert Electron-Volts to Joules:

To convert electron-volts to joules, multiply the number of electron-volts by 1.602e-19.

Joules = Electron-Volts×1.602e−19

Example:

Convert 3e+19 electron-volts to joules.

Joules = 3e+19×1.602e−19 = 4.806 J

Joules to Electron-Volts Conversion Table

Joules (J)Electron-Volts (eV)
1 J6.242e+18 eV
2 J1.2484e+19 eV
3 J1.8726e+19 eV
4 J2.4968e+19 eV
5 J3.121e+19 eV
6 J3.7452e+19 eV
7 J4.3694e+19 eV
8 J4.9936e+19 eV
9 J5.6178e+19 eV
10 J6.242e+19 eV
20 J1.2484e+20 eV
30 J1.8726e+20 eV
40 J2.4968e+20 eV
50 J3.121e+20 eV
60 J3.7452e+20 eV
70 J4.3694e+20 eV
80 J4.9936e+20 eV
90 J5.6178e+20 eV
100 J6.242e+20 eV

J to eV Conversion Chart

Electron-Volts to Joules Conversion Table

Electron-Volts (eV)Joules (J)
1 eV1.602e-19 J
2 eV3.204e-19 J
3 eV4.806e-19 J
4 eV6.408e-19 J
5 eV8.01e-19 J
6 eV9.612e-19 J
7 eV1.1214e-18 J
8 eV1.2816e-18 J
9 eV1.4418e-18 J
10 eV1.602e-18 J
20 eV3.204e-18 J
30 eV4.806e-18 J
40 eV6.408e-18 J
50 eV8.01e-18 J
60 eV9.612e-18 J
70 eV1.1214e-17 J
80 eV1.2816e-17 J
90 eV1.4418e-17 J
100 eV1.602e-17 J

eV to J Conversion Chart

Difference Between Joules to Electron-Volts

AspectJoule (J)Electron-Volt (eV)
DefinitionA unit of energy in the International System of Units (SI).A unit of energy equal to the work done when an electron is moved through a potential difference of one volt.
SymbolJeV
Conversion Factor1 Joule = 6.242e+18 Electron-Volts1 Electron-Volt = 1.602e-19 Joules
UsageCommonly used in physics and engineering.Commonly used in atomic and particle physics.
Measurement ContextMeasures energy in macroscopic systems.Measures energy in microscopic systems like atoms and particles.
Common ApplicationUsed to quantify work, heat, and energy transfer.Used to indicate the energy levels of electrons and particles.
ScaleSuitable for large-scale energy measurements.Suitable for small-scale energy measurements, such as in quantum mechanics.
OriginNamed after James Prescott Joule, an English physicist.Derived from the charge of an electron and its potential difference.

1. Solved Examples on Converting Joules to Electron-Volts

Example 1:

Convert 1 joule to electron-volts.

Electron-Volts = 11.602e−19 = 6.242e+18 eV

Example 2:

Convert 2 joules to electron-volts.

Electron-Volts = 21.602e−19 = 1.2484e+19 eV

Example 3:

Convert 0.5 joules to electron-volts.

Electron-Volts = 0.51.602e−19 = 3.121e+18 eV

Example 4:

Convert 3 joules to electron-volts.

Electron-Volts = 31.602e−19 = 1.8726e+19 eV

Example 5:

Convert 0.25 joules to electron-volts.

Electron-Volts = 0.251.602e−19 = 1.561e+18 eV

2. Solved Examples on Converting Electron-Volts to Joules

Example 1:

Convert 1 electron-volt to joules.

Joules = 1×1.602e−19 = 1.602e−19 J

Example 2:

Convert 5 electron-volts to joules.

Joules = 5×1.602e−19 = 8.01e−19 J

Example 3:

Convert 10 electron-volts to joules.

Joules = 10×1.602e−19 = 1.602e−18 J

Example 4:

Convert 20 electron-volts to joules.

Joules = 20×1.602e−19 = 3.204e−18 J

Example 5:

Convert 50 electron-volts to joules.

Joules = 50×1.602e−19 = 8.01e−18 J

Can I use online tools to convert joules to electron-volts?

Yes, many online calculators and tools are available to easily convert joules to electron-volts and vice versa.

What are some common applications of electron-volts?

Electron-volts are commonly used to measure the energy levels of electrons in atoms, the energy of particles in accelerators, and the energy of photons in spectroscopy.

How do I convert small amounts of energy from joules to electron-volts?

To convert small amounts of energy from joules to electron-volts, use the same conversion factor. For example, 1e-19 joules is equal to approximately 0.6242 electron-volts.

Why do we need to convert joules to electron-volts?

Converting joules to electron-volts is useful in atomic and particle physics, where energy levels are often expressed in electron-volts.

Is 1 joule equal to 1 electron-volt?

No, 1 joule is much larger than 1 electron-volt. 1 joule equals 6.242e+18 electron-volts.