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kilocalorie (4°C)
Symbol:  kcal4 
Category:  Energy 
SI Equivalent:  4204.5 J
Dimension ML2T-2 
Heat unit representing the energy needed to raise the temperature of 1 kg of air-free water from 3.5°C to 4.5°C at the constant pressure of 1 atm.
Convert     kcal4  
1 kcal4 =
  Symbol Unit Name
9.64391×1020  Eh  a.u. of energy 
6.8701×10-7  bboe  barrel oil equivalent 
6.8701×10-7  bboe  bboe (barrel oil equivalent) 
2.62424×1013  BeV  BeV (billion eV) 
3.98508  Btu (ISO)  British thermal unit (ISO) 
3.9851  Btu (IT)  British thermal unit (IT) 
3.98202  Btu (mean)  British thermal unit (mean) 
3.98777  Btu (therm.)  British thermal unit (thermochemical) 
1004.66  cal15  calorie (15°C) 
1000  cal4  calorie (4°C) 
1.00586  Cal, kcal  Calorie (diet kilocalorie) 
1004.24  cal (IT)  calorie (IT) (International Steam Table) 
1003.46  calmean  calorie (mean) 
1004.9  cal (therm.)  calorie (thermochemical) 
2.21385  Chu  Celsius-heat unit 
4204.5  C-V  coulomb volt 
4.14952×104  cm3-atm  cubic centimeter-atm 
1.46539  ft3-atm  cubic foot atm 
2.62424×1022  eV  electronvolt 
4.2045×1010  erg  erg 
3101.08  ft-lbf  foot-pound force 
9.97743×104  ft-pdl  foot-poundal 
2.62424×1013  GeV  gigaelectronvolt 
1004.24  gram-cal  gram calorie 
9.64391×1020  Eh  hartree 
1.5662×10-3  Hp-h  horsepower (550ft-lbf/s)-hour 
3.7213×104  in-lbf  inch pound force 
4204.5  J  joule 
1.00454  kcal15  kilocalorie (15°C) 
2.62424×1019  keV  kiloelectronvolt 
4.2045  kJ  kilojoule 
1.00586×10-9  kt (TNT)  kiloton TNT equivalent 
1.16792×10-3  kWh  kilowatt-hour 
2.62424×1016  MeV  megaelectronvolt 
4.2045×10-3  MJ  megajoule 
1.00586×10-12  Mt (TNT)  megaton TNT equivalent 
4204.5  N-m  newton meter 
3.98531×10-18    Q unit 
3.9851×10-15  quad  quad 
3.9851×10-15  quad  quadrillion 
1.92878×1021  Ry  rydberg 
1.43547×10-7  tce  tce (tonne coal equivalent) 
3.9851×10-5    therm (EEG) 
3.98605×10-5    therm (US) 
1.00454×10-3  th15 °C  thermie (15°C) 
1.00418×10-7  toe  toe (tonne oil equivalent) 
1.00586×10-6  ton (TNT)  ton TNT equivalent 
1.43547×10-7  tce  tonne coal equivalent 
1.00418×10-7  toe  tonne oil equivalent 
1.16792  Wh  watt hour 
Moment, Torque
  Symbol Unit Name
4.2045×1010  dyn-cm  dyne-centimeter 
4.2874×107  gf-cm  gram force-centimeter 
428.74  kgf-m  kilogram force-meter 
4.2045×105  N-cm  newton-centimeter 
4204.5  N-m  newton-meter 
5.95407×105  ozf-in  ounce force-inch 
3101.08  lbf-ft  pound force-foot 
3.7213×104  lbf-in  pound force-inch 
9.97743×104  pdl-ft  poundal-foot