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| 221000 British Thermal Unit ISO | to common energy units |
|---|---|
| 221000 BTUiso | = 233167376 joules (J) |
| 221000 BTUiso | = 233167.376 kilojoules (kJ) |
| 221000 BTUiso | = 55728340.344168 calories (cal) |
| 221000 BTUiso | = 55728.340344168 kilocalories (kcal) |
| 221000 BTUiso | = 1.4553132357163E+27 electron volt (eV) |
| 221000 BTUiso | = 64768.715555556 watt hour (Wh) |
| 221000 BTUiso | = 5.348189618473E+25 atomic unit of energy (au) |
| 221000 BTUiso | = 0.055728340344168 tons of TNT (tTNT) |
| 221000 BTUiso | = 171975430.9839 foot pound force (ft lbf) |
| 221000 BTUiso | = 2.33167376E+15 ergs (ergs) |