< Convert | list of units
| system | unit | unit- code |
symbol or abbrev. |
notes | sample default conversion |
combination output units | |
|---|---|---|---|---|---|---|---|
| SI | gigajoule | GJ | GJ | 1.0 GJ (280 kWh) | |||
| megajoule | MJ | MJ | 1.0 MJ (0.28 kWh) | ||||
| kilojoule | kJ | kJ | 1.0 kJ (240 cal) | ||||
| hectojoule | hJ | hJ | 1.0 hJ (24 cal) | ||||
| decajoule | daJ | daJ | 1.0 daJ (2.4 cal) | ||||
| joule | J | J | 1.0 J (0.24 cal) | ||||
| decijoule | dJ | dJ | 1.0 dJ (0.024 cal) | ||||
| centijoule | cJ | cJ | 1.0 cJ (0.0024 cal) | ||||
| millijoule | mJ | mJ | 1.0 mJ (0.00024 cal) | ||||
| microjoule | μJ (uJ) | μJ | 1.0 μJ (2.4×10−7 cal) | ||||
| nanojoule | nJ | nJ | 1.0 nJ (2.4×10−10 cal) | ||||
| cgs | megaerg | Merg | Merg | 1.0 Merg (0.10 J) | |||
| kiloerg | kerg | kerg | 1.0 kerg (0.10 mJ) | ||||
| erg | erg | (none) | 1.0 erg (0.10 μJ) | ||||
| Watt-hour multiples | terawatt-hour | TWh | TWh | 1.0 TWh (3.6 PJ) | |||
| TW.h | TW⋅h | ||||||
| gigawatt-hour | GWh | GWh | 1.0 GWh (3.6 TJ) | ||||
| GW.h | GW⋅h | ||||||
| megawatt-hour | MWh | MWh | 1.0 MWh (3.6 GJ) | ||||
| MW.h | MW⋅h | ||||||
| kilowatt-hour | kWh | kWh | 1.0 kWh (3.6 MJ) | ||||
| kW.h | kW⋅h | ||||||
| watt-hour | Wh | Wh | 1.0 Wh (3.6 kJ) | ||||
| W.h | W⋅h | ||||||
| Electron- volt multiples | |||||||
| gigaelectronvolt | GeV | GeV | 1.0 GeV (0.16 nJ) | ||||
| megaelectronvolt | MeV | MeV | 1.0 MeV (0.16 pJ) | ||||
| kiloelectronvolt | keV | keV | 1.0 keV (0.16 fJ) | ||||
| electronvolt | eV | eV | 1.0 eV (0.16 aJ) | ||||
| millielectronvolt | meV | meV | 1.0 meV (0.16 zJ) | ||||
| Calorie multiples | calorie | Cal | Cal | The thermo-chemical calorie is the default definition. For others, see the full list. | 1.0 Cal (4.2 kJ) | ||
| megacalorie | Mcal | Mcal | 1.0 Mcal (4.2 MJ) | ||||
| kilocalorie | kcal | kcal | 1.0 kcal (4.2 kJ) | ||||
| calorie | cal | cal | 1.0 cal (4.2 J) | ||||
| millicalorie | mcal | mcal | 1.0 mcal (4.2 mJ) | ||||
| pound/ ounce-foot/ inch-hour-minute-second |
foot-poundal | ftpdl | ft⋅pdl | 1.0 ft⋅pdl (0.042 J) | |||
| foot-pound force | ftlbf | ft⋅lbf | 1.0 ft⋅lbf (1.4 J) | ||||
| ftlb-f | ft⋅lbf | ||||||
| inch-pound force | inlbf | in⋅lbf | 1.0 in⋅lbf (110 mJ) | ||||
| inlb-f | in⋅lbf | ||||||
| inch-ounce force | inozf | in⋅ozf | 1.0 in⋅ozf (7.1 mJ) | ||||
| inoz-f | in⋅ozf | ||||||
| horsepower-hour | hph | hp⋅h | 1.0 hp⋅h (0.75 kWh) | ||||
| British thermal unit | British thermal unit | Btu | Btu | The International Steam Table British thermal unit is used. For others, see the full list. | 1.0 Btu (1.1 kJ) | ||
| BTU | BTU | ||||||
| TNT-based units | gigatonne of TNT | GtTNT | (none) | 1.0 gigatonne of TNT (4.2 EJ) | |||
| gigaton of TNT | GtonTNT | (none) | |||||
| megatonne of TNT | MtTNT | (none) | 1.0 megatonne of TNT (4.2 PJ) | ||||
| megaton of TNT | MtonTNT | Mt | |||||
| kilotonne of TNT | ktTNT | (none) | 1.0 kilotonne of TNT (4.2 TJ) | ||||
| kiloton of TNT | ktonTNT | kt | |||||
| tonne of TNT | tTNT | (none) | 1.0 tonne of TNT (4.2 GJ) | ||||
| ton of TNT | tonTNT | (none) | |||||
| Other | |||||||
| Hartree | Eh | Eh | 1.0 Eh (27 eV) | ||||
| rydberg | Ry | Ry | 1.0 Ry (14 eV) | ||||
| tonne of oil equivalent | toe | toe | 1.0 toe (42 GJ) | ||||
| barrel of oil equivalent | BOE | BOE | 1.0 BOE (6.1 GJ) | ||||
| cubic foot of natural gas | cuftnaturalgas (cufootnaturalgas) | Unit-code cufootnaturalgas will show "cubic foot of natural gas" if plural. | 1.0 cubic foot of natural gas (1.1 MJ) | ||||