Joule (J)
The joule is the SI unit of energy — the work done when one newton moves an object one meter.
Joules quantify electricity bills (as kWh), food energy (as kcal), and scientific energy transfers.
Joule to electronvolt
Convert joule to electronvolt instantly. Type in either field — results update live.
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Energy Joule electronvolt
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Conversion table
Selected J values converted to electronvolt using the exact factor from this tool.
| J | electronvolt |
|---|---|
| 0.01 | — |
| 0.1 | — |
| 1 | — |
| 2 | — |
| 3 | — |
| 5 | — |
| 10 | — |
| 20 | — |
| 50 | — |
| 100 | — |
| 1,000 | — |
About these units
Short background on the units used in this conversion.
electronvolt
The electronvolt is the energy gained by an electron crossing one volt of electric potential — about 1.602 × 10⁻¹⁹ joules.
Electronvolts describe particle physics energies, semiconductor band gaps, and atomic-scale phenomena.
Frequently asked questions
How many electronvolts are in one joule?
One joule equals electronvolts. Multiply your joules value by to convert to electronvolts.
What is the conversion formula?
electronvolt = J × The reverse is
J = electronvolt × , using the same exact factors as this converter.Is this Joule to electronvolt converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.
All joule conversions
Jump to any energy conversion starting from joule — including the reverse direction and every other unit in our dataset.
electronvolt → joule (J)
joule (J) → kilojoule (kJ)joule (J) → megajoule (MJ)joule (J) → gigajoule (GJ)joule (J) → kilowatt-hour (kW·h)joule (J) → watt-hour (W·h)joule (J) → calorie (nutritional / food calorie) (Cal)joule (J) → kilocalorie (it) (kcal (IT))joule (J) → kilocalorie (thermochemical) (kcal (th))joule (J) → calorie (it) (cal (IT))joule (J) → calorie (thermochemical) (cal (th))joule (J) → british thermal unit (it) (Btu (IT))joule (J) → british thermal unit (thermochemical) (Btu (th))joule (J) → foot-pound (ft·lbf)joule (J) → newton meter (N·m)joule (J) → horsepower hour (mechanical) (hp·h)joule (J) → horsepower (metric) hour (metric hp·h)joule (J) → millijoule (mJ)joule (J) → microjoule (µJ)joule (J) → nanojoule (nJ)joule (J) → attojoule (aJ)joule (J) → megaelectron-volt (MeV)joule (J) → kiloelectron-volt (keV)joule (J) → electron-volt (eV)joule (J) → ergjoule (J) → gigawatt-hour (GW·h)joule (J) → megawatt-hour (MW·h)joule (J) → kilowatt-second (kW·s)joule (J) → watt-second (W·s)joule (J) → mega british thermal unit (it) (MBtu (IT))joule (J) → ton-hour (refrigeration) (ton·h)joule (J) → fuel oil equivalent @ kiloliter (kL oil eq)joule (J) → fuel oil equivalent @ barrel (us) (bbl oil eq)joule (J) → gigaton (tnt) (Gton)joule (J) → megaton (tnt) (Mton)joule (J) → kiloton (tnt) (kton)joule (J) → ton (explosives / tnt) (ton TNT)joule (J) → dyne centimeter (dyn·cm)joule (J) → gram-force meter (gf·m)joule (J) → gram-force centimeter (gf·cm)joule (J) → kilogram-force centimeter (kgf·cm)joule (J) → kilogram-force meter (kgf·m)joule (J) → kilopond meter (kp·m)joule (J) → pound-force foot (lbf·ft)joule (J) → pound-force inch (lbf·in)joule (J) → ounce-force inch (ozf·in)joule (J) → inch-pound (in·lbf)joule (J) → inch-ounce (in·ozf)joule (J) → poundal foot (pdl·ft)joule (J) → thermjoule (J) → therm (ec)joule (J) → therm (us)joule (J) → hartree energy (Eh)joule (J) → rydberg constant (Ry)