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Symbol:  quad 
Category:  Energy 
SI Equivalent:  1.05506×1018 J
Dimension Ml2T-2 
System:  US 
Large unit of energy used in the energy industry.
1 quad = 1015 Btu
Convert     quad  
1 quad =
  Symbol Unit Name
2.41999×1035  Eh  a.u. of energy 
1.72395×108  bboe  barrel oil equivalent 
1.72395×108  bboe  bboe (barrel oil equivalent) 
6.58514×1027  BeV  BeV (billion eV) 
9.99996×1014  Btu (ISO)  British thermal unit (ISO) 
10×1014  Btu (IT)  British thermal unit (IT) 
9.99229×1014  Btu (mean)  British thermal unit (mean) 
1.00067×1015  Btu (therm.)  British thermal unit (thermochemical) 
2.52104×1017  cal15  calorie (15°C) 
2.50935×1017  cal4  calorie (4°C) 
2.52406×1014  Cal, kcal  Calorie (diet kilocalorie) 
2.51999×1017  cal (IT)  calorie (IT) (International Steam Table) 
2.51802×1017  calmean  calorie (mean) 
2.52164×1017  cal (therm.)  calorie (thermochemical) 
5.55532×1014  Chu  Celsius-heat unit 
1.05506×1018  C-V  coulomb volt 
1.04126×1019  cm3-atm  cubic centimeter-atm 
3.67718×1014  ft3-atm  cubic foot atm 
6.58514×1036  eV  electronvolt 
1.05506×1025  erg  erg 
7.78169×1017  ft-lbf  foot-pound force 
2.50369×1019  ft-pdl  foot-poundal 
6.58514×1027  GeV  gigaelectronvolt 
2.51999×1017  gram-cal  gram calorie 
2.41999×1035  Eh  hartree 
3.93015×1011  Hp-h  horsepower (550ft-lbf/s)-hour 
9.33803×1018  in-lbf  inch pound force 
1.05506×1018  J  joule 
2.52074×1014  kcal15  kilocalorie (15°C) 
2.50935×1014  kcal4  kilocalorie (4°C) 
6.58514×1033  keV  kiloelectronvolt 
1.05506×1015  kJ  kilojoule 
2.52406×105  kt (TNT)  kiloton TNT equivalent 
2.93071×1011  kWh  kilowatt-hour 
6.58514×1030  MeV  megaelectronvolt 
1.05506×1012  MJ  megajoule 
252.406  Mt (TNT)  megaton TNT equivalent 
1.05506×1018  N-m  newton meter 
1.00005×10-3    Q unit 
quad  quadrillion 
4.83999×1035  Ry  rydberg 
3.6021×107  tce  tce (tonne coal equivalent) 
10×109    therm (EEG) 
1.00024×1010    therm (US) 
2.52074×1011  th15 °C  thermie (15°C) 
2.51984×107  toe  toe (tonne oil equivalent) 
2.52406×108  ton (TNT)  ton TNT equivalent 
3.6021×107  tce  tonne coal equivalent 
2.51984×107  toe  tonne oil equivalent 
2.93071×1014  Wh  watt hour 
Moment, Torque
  Symbol Unit Name
1.05506×1025  dyn-cm  dyne-centimeter 
1.07586×1022  gf-cm  gram force-centimeter 
1.07586×1017  kgf-m  kilogram force-meter 
1.05506×1020  N-cm  newton-centimeter 
1.05506×1018  N-m  newton-meter 
1.49408×1020  ozf-in  ounce force-inch 
7.78169×1017  lbf-ft  pound force-foot 
9.33803×1018  lbf-in  pound force-inch 
2.50369×1019  pdl-ft  poundal-foot