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| 21 Gigajoules | to common energy units |
|---|---|
| 21 GJ | = 21000000000 joules (J) |
| 21 GJ | = 21000000 kilojoules (kJ) |
| 21 GJ | = 5019120458.891 calories (cal) |
| 21 GJ | = 5019120.458891 kilocalories (kcal) |
| 21 GJ | = 1.3107141519679E+29 electron volt (eV) |
| 21 GJ | = 5833333.3333333 watt hour (Wh) |
| 21 GJ | = 4.8167965825516E+27 atomic unit of energy (au) |
| 21 GJ | = 5.019120458891 tons of TNT (tTNT) |
| 21 GJ | = 15488805134.823 foot pound force (ft lbf) |
| 21 GJ | = 2.1E+17 ergs (ergs) |