Convert Joule to Gigajoule Online

Joule (J)

Gigajoule (GJ)

About Joule to Gigajoule Conversion

This converter converts Joule (J) to Gigajoule (GJ). One Joule (J) equals 1e-9 Gigajoule (GJ).

Formula:

1 Joule (J) = 1e-9 Gigajoule (GJ)

Example:

1 J = 1e-9 GJ

2 J = 2e-9 GJ

Joule (J) to Gigajoule (GJ) Conversion

Convert Joule to Gigajoule using the exact conversion factor. This page provides the formula, worked examples, and real-world use cases for practical understanding.

Conversion Formula

Gigajoule = Joule × 1.000000e-9

To convert Joule (J) to Gigajoule (GJ), multiply the value by 1.000000e-9. This factor is obtained by comparing their exact meter definitions.

Worked Example

Convert 1 J to GJ.

Step 1: Write the formula: GJ = J × 1.000000e-9
Step 2: Substitute: 1 × 1.000000e-9
Step 3: Result: 1.000000e-9 GJ

So, 1 J = 1.000000e-9 GJ.

About the Units

Joule (J)

One Joule (J) equals 1.000000e-9 Gigajoule (GJ)

A widely used unit across scientific, engineering, and measurement contexts.

Gigajoule (GJ)

One Gigajoule (GJ) equals 1.000000e+9 Joule (J)

Used for extremely large distances such as astronomical or planetary scales.

Where This Conversion Is Used

Converting values from Joule to Gigajoule for engineering or scientific workflows.
Used when normalizing mixed-unit datasets requiring consistent Gigajoule representation.
Applied when comparing different measurement systems across tools and documents.
Essential in astronomy, orbital mechanics, and large-scale simulations.

Frequently Asked Questions

How many Gigajoule (GJ) are in 1 Joule (J)?

1 J = 1.000000e-9 GJ.

What is the formula for converting Joule (J) to Gigajoule (GJ)?

Multiply the J value by 1.000000e-9.

Can I reverse the conversion?

Yes. 1 GJ = 1.000000e+9 J.

Conclusion

By applying the conversion factor shown above, you can reliably convert Joule (J) to Gigajoule (GJ) for use in scientific analysis, engineering calculations, academic work, or daily measurements.

Quick Links for Unit Converters

Convert Joule to Other Units

Joule to Kilojoule

1 J = 0.001 kJ

1 Joule (J) = 0.001 Kilojoule (kJ)

1 J equals 0.001 kJ.

Joule to Megajoule

1 J = 0.000001 MJ

1 Joule (J) = 0.000001 Megajoule (MJ)

1 J equals 0.000001 MJ.

Joule to Gigajoule

1 J = 1e-9 GJ

1 Joule (J) = 1e-9 Gigajoule (GJ)

1 J equals 1e-9 GJ.

Joule to Watt-hour

1 J = 0.0002777777777777778 Wh

1 Joule (J) = 0.0002777777777777778 Watt-hour (Wh)

1 J equals 0.0002777777777777778 Wh.

Joule to Kilowatt-hour

1 J = 2.7777777777777776e-7 kWh

1 Joule (J) = 2.7777777777777776e-7 Kilowatt-hour (kWh)

1 J equals 2.7777777777777776e-7 kWh.

Joule to Megawatt-hour

1 J = 2.7777777777777777e-10 MWh

1 Joule (J) = 2.7777777777777777e-10 Megawatt-hour (MWh)

1 J equals 2.7777777777777777e-10 MWh.

Joule to Erg

1 J = 10000000 erg

1 Joule (J) = 10000000 Ergs

1 J equals 10000000 ergs.

Joule to Calorie

1 J = 0.2390057361376673 cal

1 Joule (J) = 0.2390057361376673 Calorie (cal)

1 J equals 0.2390057361376673 cal.

Joule to Kilocalorie

1 J = 0.0002390057361376673 kcal

1 Joule (J) = 0.0002390057361376673 Kilocalorie (kcal)

1 J equals 0.0002390057361376673 kcal.

Joule to British Thermal Unit

1 J = 0.0009478133944988911 BTU

1 Joule (J) = 0.0009478133944988911 British Thermal Unit (BTU)

1 J equals 0.0009478133944988911 BTU.

Joule to Foot-pound force

1 J = 0.7375621494575464 ft_lbf

1 Joule (J) = 0.7375621494575464 Foot-pound force (ft⋅lbf)

1 J equals 0.7375621494575464 ft_lbf.

Joule to Horsepower-hour

1 J = 3.7250648813175704e-7 hp_h

1 Joule (J) = 3.7250648813175704e-7 Horsepower-hour (hp⋅h)

1 J equals 3.7250648813175704e-7 hp_h.

Joule to Therm

1 J = 9.478133944988911e-9 therm_us

1 Joule (J) = 9.478133944988911e-9 Therm (US)

1 J equals 9.478133944988911e-9 therm_us.

Joule to Electronvolt

1 J = 6241509074460763000 eV

1 Joule (J) = 6241509074460763000 Electronvolts (eV)

1 J equals 6241509074460763000 eVs.

Joule to Kiloelectronvolt

1 J = 6241509074460763 keV

1 Joule (J) = 6241509074460763 Kiloelectronvolts (keV)

1 J equals 6241509074460763 keVs.

Joule to Megaelectronvolt

1 J = 6241509074460.763 MeV

1 Joule (J) = 6241509074460.763 Megaelectronvolts (MeV)

1 J equals 6241509074460.763 MeVs.

Joule to Gigaelectronvolt

1 J = 6241509074.460762 GeV

1 Joule (J) = 6241509074.460762 Gigaelectronvolts (GeV)

1 J equals 6241509074.460762 GeVs.

Joule to Tonne of Oil Equivalent

1 J = 2.3884589662749594e-11 toe

1 Joule (J) = 2.3884589662749594e-11 Tonne of Oil Equivalent (toe)

1 J equals 2.3884589662749594e-11 toe.

Joule to Tonne of Coal Equivalent

1 J = 3.412084237535656e-11 tce

1 Joule (J) = 3.412084237535656e-11 Tonne of Coal Equivalent (tce)

1 J equals 3.412084237535656e-11 tce.

Joule to Hartree

1 J = 229371227839632480 hartree

1 Joule (J) = 229371227839632480 Hartrees

1 J equals 229371227839632480 hartrees.

Convert Gigajoule to Other Units

Gigajoule to Joule

1 GJ = 1000000000 J

1 Gigajoule (GJ) = 1000000000 Joules (J)

1 GJ equals 1000000000 Js.

Gigajoule to Kilojoule

1 GJ = 1000000 kJ

1 Gigajoule (GJ) = 1000000 Kilojoules (kJ)

1 GJ equals 1000000 kJs.

Gigajoule to Megajoule

1 GJ = 1000 MJ

1 Gigajoule (GJ) = 1000 Megajoules (MJ)

1 GJ equals 1000 MJs.

Gigajoule to Watt-hour

1 GJ = 277777.77777777775 Wh

1 Gigajoule (GJ) = 277777.77777777775 Watt-hours (Wh)

1 GJ equals 277777.77777777775 Whs.

Gigajoule to Kilowatt-hour

1 GJ = 277.77777777777777 kWh

1 Gigajoule (GJ) = 277.77777777777777 Kilowatt-hours (kWh)

1 GJ equals 277.77777777777777 kWhs.

Gigajoule to Megawatt-hour

1 GJ = 0.2777777777777778 MWh

1 Gigajoule (GJ) = 0.2777777777777778 Megawatt-hour (MWh)

1 GJ equals 0.2777777777777778 MWh.

Gigajoule to Erg

1 GJ = 10000000000000000 erg

1 Gigajoule (GJ) = 10000000000000000 Ergs

1 GJ equals 10000000000000000 ergs.

Gigajoule to Calorie

1 GJ = 239005736.1376673 cal

1 Gigajoule (GJ) = 239005736.1376673 Calories (cal)

1 GJ equals 239005736.1376673 cals.

Gigajoule to Kilocalorie

1 GJ = 239005.7361376673 kcal

1 Gigajoule (GJ) = 239005.7361376673 Kilocalories (kcal)

1 GJ equals 239005.7361376673 kcals.

Gigajoule to British Thermal Unit

1 GJ = 947813.3944988911 BTU

1 Gigajoule (GJ) = 947813.3944988911 British Thermal Units (BTU)

1 GJ equals 947813.3944988911 BTUs.

Gigajoule to Foot-pound force

1 GJ = 737562149.4575465 ft_lbf

1 Gigajoule (GJ) = 737562149.4575465 Foot-pound forces (ft⋅lbf)

1 GJ equals 737562149.4575465 ft_lbves.

Gigajoule to Horsepower-hour

1 GJ = 372.506488131757 hp_h

1 Gigajoule (GJ) = 372.506488131757 Horsepower-hours (hp⋅h)

1 GJ equals 372.506488131757 hp_hs.

Gigajoule to Therm

1 GJ = 9.47813394498891 therm_us

1 Gigajoule (GJ) = 9.47813394498891 Therms (US)

1 GJ equals 9.47813394498891 therm_uses.

Gigajoule to Electronvolt

1 GJ = 6.241509074460763e+27 eV

1 Gigajoule (GJ) = 6.241509074460763e+27 Electronvolts (eV)

1 GJ equals 6.241509074460763e+27 eVs.

Gigajoule to Kiloelectronvolt

1 GJ = 6.241509074460763e+24 keV

1 Gigajoule (GJ) = 6.241509074460763e+24 Kiloelectronvolts (keV)

1 GJ equals 6.241509074460763e+24 keVs.

Gigajoule to Megaelectronvolt

1 GJ = 6.241509074460763e+21 MeV

1 Gigajoule (GJ) = 6.241509074460763e+21 Megaelectronvolts (MeV)

1 GJ equals 6.241509074460763e+21 MeVs.

Gigajoule to Gigaelectronvolt

1 GJ = 6241509074460762000 GeV

1 Gigajoule (GJ) = 6241509074460762000 Gigaelectronvolts (GeV)

1 GJ equals 6241509074460762000 GeVs.

Gigajoule to Tonne of Oil Equivalent

1 GJ = 0.023884589662749593 toe

1 Gigajoule (GJ) = 0.023884589662749593 Tonne of Oil Equivalent (toe)

1 GJ equals 0.023884589662749593 toe.

Gigajoule to Tonne of Coal Equivalent

1 GJ = 0.034120842375356564 tce

1 Gigajoule (GJ) = 0.034120842375356564 Tonne of Coal Equivalent (tce)

1 GJ equals 0.034120842375356564 tce.

Gigajoule to Hartree

1 GJ = 2.293712278396325e+26 hartree

1 Gigajoule (GJ) = 2.293712278396325e+26 Hartrees

1 GJ equals 2.293712278396325e+26 hartrees.