ENERGY
Energy & work
Mechanical, electrical, thermal and particle energy.
Try a decimal, 1e-9, 1/3, or 5 1/2.
ResultJ → GJConvert joule to gigajoule
EVERYDAY · ENGINEERING · SCIENCE
Unit conversion. Made clear.
Start with a familiar unit, type a value, and get a dependable answer with sensible precision. Fractions and scientific notation are welcome.
520units ready to convert
HOW IT IS CALCULATED
Convert through joule
Enter a joule value to calculate gigajoule with full internal precision before display rounding.
Display precisionAuto · 12 significant digits
Auto keeps up to 12 significant digits, trims unnecessary zeroes, and switches to scientific notation for extreme magnitudes.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| ergfrom J | erg | Interactive |
| microjoulefrom J | µJ | Interactive |
| millijoulefrom J | mJ | Interactive |
| joulefrom J | J | Interactive |
| kilojoulefrom J | kJ | Interactive |
| megajoulefrom J | MJ | Interactive |
| gigajoulefrom J | GJ | Interactive |
| watt-hourfrom J | Wh | Interactive |
| kilowatt-hourfrom J | kWh | Interactive |
| megawatt-hourfrom J | MWh | Interactive |
| thermochemical caloriefrom J | calₜₕ | Interactive |
| thermochemical kilocaloriefrom J | kcalₜₕ | Interactive |
| International Table caloriefrom J | calIT | Interactive |
| International Table British thermal unitfrom J | BtuIT | Interactive |
| U.S. thermfrom J | therm US | Interactive |
| foot pound-forcefrom J | ft·lbf | Interactive |
| electronvoltfrom J | eV | Interactive |
| kiloelectronvoltfrom J | keV | Interactive |
| megaelectronvoltfrom J | MeV | Interactive |
| gigaelectronvoltfrom J | GeV | Interactive |
| ton of TNTfrom J | t TNT | Interactive |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.