Kilojoules (kJ) to Electronvolts (eV) Conversion
Kilojoules
The kilojoule (kJ) is a unit of energy equal to exactly 1,000 joules. It is the standard unit for expressing food energy in most countries outside the United States, where food labels display energy in both kilojoules and kilocalories (kcal). One kilocalorie equals exactly 4.184 kilojoules. In thermodynamics and chemistry, reaction enthalpies and bond energies are commonly tabulated in kilojoules per mole (kJ/mol).
Electronvolts
The electronvolt (eV) is a unit of energy equal to exactly 1.602176634 × 10⁻¹⁹ joules, defined as the kinetic energy gained by a single electron accelerated through a potential difference of one volt. It is the standard unit in particle physics, atomic physics, and solid-state physics. Visible light photons carry 1.8–3.1 eV of energy; X-ray photons carry 100 eV to 100 keV; the proton beams at CERN's LHC reach 6.5 teraelectronvolts (TeV).
| Kilojoules (kJ) | Electronvolts (eV) |
|---|---|
| 0.1 kJ | 624,150,907,446,076,200,000.00 eV |
| 1 kJ | 6,241,509,074,460,763,000,000.00 eV |
| 2 kJ | 12,483,018,148,921,525,000,000.00 eV |
| 3 kJ | 18,724,527,223,382,288,000,000.00 eV |
| 5 kJ | 31,207,545,372,303,816,000,000.00 eV |
| 10 kJ | 62,415,090,744,607,630,000,000.00 eV |
| 20 kJ | 124,830,181,489,215,260,000,000.00 eV |
| 30 kJ | 187,245,272,233,822,880,000,000.00 eV |
| 50 kJ | 312,075,453,723,038,140,000,000.00 eV |
| 100 kJ | 624,150,907,446,076,300,000,000.00 eV |
| 1000 kJ | 6,241,509,074,460,763,000,000,000.00 eV |
Frequently Asked Questions (FAQ)
How many electronvolts are in 1 kilojoules?
1 kilojoules (kJ) is exactly 6,241,509,074,460,762,701,824 electronvolts (eV).
How do I convert kilojoules to electronvolts?
Multiply the value in kilojoules by 6,241,509,074,460,762,701,824 to get the result in electronvolts. Or use the converter above — type any number and see the result instantly.