Tables showing the SI equivalents of metric units and some older units commonly used, such as Barrel of Oil Equivalent (boe), Calorie (cal), Foot Pound (ft lb), Electron Volt (eV) and Joule (J).
Units of Energy Table
| Unit | SI equivalent | Inverse |
|---|---|---|
| 1 barrel of oil equivalent (boe) | equals 5.7 GJ (lower heating value) | 1 GJ = 0.175 boe |
| 1 cal (calorie) | equals 4.2 J | 1 J = 0.24 cal |
| 1 ft lb (foot pound) | equals 1.356 J | 1 J = 0.7375 ft lb |
| 1 eV (electron-volt) | equals 1.602 x 10-19 J | 1 J = 6.242 x 1018 eV |
| 1 MeV | equals 1.602 x 10-13 J | 1 J = 6.242 x 1012 MeV |
The Royal Society (1975) Quantities, Units and Symbols, London, The Royal Society