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A quad is a unit of energy equal to 10^15 (a short-scale quadrillion) BTU, or 1.055 x 10^18 joules (1.055 exajoules or EJ) in SI units. The unit is used by the U.S. Department o ..more definition+
In relation to the base unit of [energy] => (joules), 1 Hartree (Eh, Ha) is equal to 4.359744E-18 joules, while 1 Quads (quad) = 1.05505585262E+18 joules.| 1 Hartree | to common energy units |
|---|---|
| 1 Eh, Ha | = 4.359744E-18 joules (J) |
| 1 Eh, Ha | = 4.359744E-21 kilojoules (kJ) |
| 1 Eh, Ha | = 1.0420038240918E-18 calories (cal) |
| 1 Eh, Ha | = 1.0420038240918E-21 kilocalories (kcal) |
| 1 Eh, Ha | = 27.211324570273 electron volt (eV) |
| 1 Eh, Ha | = 1.21104E-21 watt hour (Wh) |
| 1 Eh, Ha | = 1 atomic unit of energy (au) |
| 1 Eh, Ha | = 1.0420038240918E-27 tons of TNT (tTNT) |
| 1 Eh, Ha | = 3.2155821549387E-18 foot pound force (ft lbf) |
| 1 Eh, Ha | = 4.359744E-11 ergs (ergs) |