Kilojoule to Electron-volt Conversion

Convert between Kilojoule and Electron-volt quickly and accurately.

kJ
eV

How to Convert Kilojoule to Electron-volt

Conversion Formula

1 kJ = 6E+21 eV
1 eV = 2E-22 kJ

Example

Convert 15 kJ to eV:

15 kJ = 15 × 6E+21 eV = 9E+22 eV

Unit Information

Learn about the energy units you're converting between

Kilojoule

kJ

Definition

A kilojoule (symbol: kJ) is a unit of energy equal to 1,000 joules. It is commonly used for measuring larger amounts of energy in food, exercise, and industrial applications. One kilojoule equals approximately 0.239 kilocalories.

History/Origin

The kilojoule was introduced as a practical unit for measuring larger energy quantities in the metric system. It became widely used in the late 20th century for food labeling and energy consumption measurements.

Current Use

Kilojoules are extensively used in nutrition labeling worldwide, exercise physiology for measuring energy expenditure, industrial energy consumption monitoring, and scientific research for measuring moderate energy quantities.

Multiplier

1000

Offset

0

Electron-volt

eV

Definition

An electron-volt (symbol: eV) is a unit of energy used in atomic and particle physics, equal to approximately 1.602 × 10^-19 joules. It represents the kinetic energy gained by an electron when accelerated through a potential difference of one volt.

History/Origin

The electron-volt was introduced in the early 20th century for describing atomic and particle energies. It became essential in atomic physics, quantum mechanics, and particle physics research, providing a convenient energy scale for subatomic particles.

Current Use

Electron-volts are used in atomic physics for describing atomic energy levels, in particle physics for measuring particle energies, in semiconductor physics for band gap energies, and in nuclear physics for nuclear reaction energies.

Multiplier

2E-19

Offset

0

Kilojoule to Electron-volt Conversion Table

Kilojoule [kJ] Electron-volt [eV]
1 kJ 6E+21 eV
10 kJ 6E+22 eV
25 kJ 2E+23 eV
50 kJ 3E+23 eV
100 kJ 6E+23 eV
0 kJ 0E+0 eV
-10 kJ -6E+22 eV
-40 kJ -3E+23 eV

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