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Math
 
joule
Symbol:  J 
Category:  Energy 
SI Equivalent:  1 J
Dimension:  ML2T-2 
System:  SI 
 
Notes
Named after the English physicist James Prescott Joule (1818-1889), the joule is the basic unit of work or energy in the SI system. It is equal to the work done by a force of 1 newton with the point of application displaced by 1 meter in the direction of the force.
Convert     J  
28.0 J =
Energy
  Symbol Unit Name
6.42239×1018  Eh  a.u. of energy 
4.57516×10-9  bboe  barrel oil equivalent 
4.57516×10-9  bboe  bboe (barrel oil equivalent) 
1.74762×1011  BeV  BeV (billion eV) 
2.65388×10-2  Btu (ISO)  British thermal unit (ISO) 
2.65389×10-2  Btu (IT)  British thermal unit (IT) 
2.65184×10-2  Btu (mean)  British thermal unit (mean) 
2.65566×10-2  Btu (therm.)  British thermal unit (thermochemical) 
6.69056  cal15  calorie (15°C) 
6.65953  cal4  calorie (4°C) 
6.69856×10-3  Cal, kcal  Calorie (diet kilocalorie) 
6.68778  cal (IT)  calorie (IT) (International Steam Table) 
6.68255  calmean  calorie (mean) 
6.69216  cal (therm.)  calorie (thermochemical) 
1.47432×10-2  Chu  Celsius-heat unit 
28  C-V  coulomb volt 
276.339  cm3-atm  cubic centimeter-atm 
9.75882×10-3  ft3-atm  cubic foot atm 
1.74762×1020  eV  electronvolt 
2.8×108  erg  erg 
20.6517  ft-lbf  foot-pound force 
664.45  ft-pdl  foot-poundal 
1.74762×1011  GeV  gigaelectronvolt 
6.68778  gram-cal  gram calorie 
6.42239×1018  Eh  hartree 
1.04302×10-5  Hp-h  horsepower (550ft-lbf/s)-hour 
247.821  in-lbf  inch pound force 
6.68976×10-3  kcal15  kilocalorie (15°C) 
6.65953×10-3  kcal4  kilocalorie (4°C) 
1.74762×1017  keV  kiloelectronvolt 
2.8×10-2  kJ  kilojoule 
6.69856×10-12  kt (TNT)  kiloton TNT equivalent 
7.77778×10-6  kWh  kilowatt-hour 
1.74762×1014  MeV  megaelectronvolt 
2.8×10-5  MJ  megajoule 
6.69856×10-15  Mt (TNT)  megaton TNT equivalent 
28  N-m  newton meter 
2.65403×10-20    Q unit 
2.65389×10-17  quad  quad 
2.65389×10-17  quad  quadrillion 
1.28448×1019  Ry  rydberg 
9.55958×10-10  tce  tce (tonne coal equivalent) 
2.65389×10-7    therm (EEG) 
2.65452×10-7    therm (US) 
6.68976×10-6  th15 °C  thermie (15°C) 
6.68737×10-10  toe  toe (tonne oil equivalent) 
6.69856×10-9  ton (TNT)  ton TNT equivalent 
9.55958×10-10  tce  tonne coal equivalent 
6.68737×10-10  toe  tonne oil equivalent 
7.77778×10-3  Wh  watt hour 
Moment, Torque
  Symbol Unit Name
2.8×108  dyn-cm  dyne-centimeter 
2.85521×105  gf-cm  gram force-centimeter 
2.85521  kgf-m  kilogram force-meter 
2800  N-cm  newton-centimeter 
28  N-m  newton-meter 
3965.13  ozf-in  ounce force-inch 
20.6517  lbf-ft  pound force-foot 
247.821  lbf-in  pound force-inch 
664.45  pdl-ft  poundal-foot 
Glossary
FREE Publications
Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

more publications