Joules to megaelectronvolts
Type a value in joules to see it in megaelectronvolts straight away, or type in the second box to convert back.
Loading the tool…
Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the joules box.
- Read the result in megaelectronvolts as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
MeV = J × 6,241,509,074,000
Multiply the value in joules by 6,241,509,074,000 to get megaelectronvolts.
Example
To convert 25 J to megaelectronvolts: 25 × 6,241,509,074,000 = 156,038,000,000,000 MeV.
Conversion table
| Joules (J) | Megaelectronvolts (MeV) |
|---|---|
| 1 | 6,241,510,000,000 |
| 2 | 12,483,000,000,000 |
| 3 | 18,724,500,000,000 |
| 5 | 31,207,500,000,000 |
| 10 | 62,415,100,000,000 |
| 20 | 124,830,000,000,000 |
| 25 | 156,038,000,000,000 |
| 50 | 312,075,000,000,000 |
| 100 | 624,151,000,000,000 |
| 250 | 1.56038e+15 |
| 500 | 3.12075e+15 |
| 1,000 | 6.24151e+15 |
About the units
- Joule
- The SI unit of energy, equal to the work done by a force of one newton moving an object one meter.
- Megaelectronvolt
- Exactly one million electronvolts, used in nuclear and particle physics.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many megaelectronvolts are in one joule?
1 J = 6,241,510,000,000 MeV exactly.
How do I convert joules to megaelectronvolts?
Use MeV = J × 6,241,509,074,000. For example, 25 J = 156,038,000,000,000 MeV.
How many joules are in one megaelectronvolt?
1 MeV = 1.60218e-13 J.
Which calorie do these converters use?
The thermochemical calorie, exactly 4.184 joules, the factor many countries use to turn kcal into kJ on food labels. The International Table calorie is 4.1868 joules, less than 0.07% larger.
What is the difference between kW and kWh?
A kilowatt is a unit of power, the rate of using energy, while a kilowatt-hour is an amount of energy. A 2 kW heater running for three hours uses 6 kWh.