21 Joules to Electronvolts
Convert 21 joules (J) to electronvolts (eV) with formulas, examples, and conversion tables.
J
eV
21 Joules (J) = 1.31071415197e20 Electronvolts (eV)
Round to:
Step-by-Step Solution
1Write the conversion factor:
1 Joule = 6.24149596175e18 Electronvolts
2Multiply the value by the conversion factor:
21 × 6.24149596175e18 = 1.31071415197e20
3Result:
21 Joules (J) = 1.31071415197e20 Electronvolts (eV)
Joules to Electronvolts Conversion Table
| Joules | Electronvolts |
|---|---|
| 1 J | 6.2415e18 eV |
| 2 J | 1.2483e19 eV |
| 3 J | 1.87245e19 eV |
| 4 J | 2.4966e19 eV |
| 5 J | 3.12075e19 eV |
| 10 J | 6.2415e19 eV |
| 20 J | 1.2483e20 eV |
| 21 J | 1.31071e20 eV |
| 50 J | 3.12075e20 eV |
| 100 J | 6.2415e20 eV |
21 Joules in Other Units
| Unit | 21 J = |
|---|---|
| Joules to Kilojoules | 0.021 kJ |
| Joules to Megajoules | 2.1e-5 MJ |
| Joules to Gigajoules | 2.1e-8 GJ |
| Joules to Watt-hours | 0.00583333333333 Wh |
| Joules to Kilowatt-hours | 5.83333333333e-6 kWh |
| Joules to Megawatt-hours | 5.83333333333e-9 MWh |
| Joules to Calories | 5.01912045889 cal |
| Joules to Kilocalories | 0.00501912045889 kcal |
| Joules to BTU | 0.0199040812845 BTU |
| Joules to Therms | 1.9904159527e-7 therm |
| Joules to Foot-pounds | 15.4887816967 ft·lb |
| Joules to Electronvolts | 1.31071415197e20 eV |
| Joules to Ergs | 210000000 erg |