Centijoule is 0.01 joule units.
Centijoules to Gigajoules Converter — cJ to GJ
Convert Centijoule (cJ) to Gigajoule (GJ) using the exact conversion factor (1 centijoule = 1e-11 gigajoule). See the formula, worked examples, and conversion table.
Centijoules to Gigajoules converter
Converter
Energy Converter
Convert joules, calories, kilowatt-hours, BTU, electronvolts, therms, and mechanical work units.
Context values
Some unit families need one extra value for a physically accurate result.
Gigajoule is 1000000000 joule units.
Result = input x 0.01 / 1e+9.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Centijoules to Gigajoules
Centijoule and Gigajoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Centijoule is 0.01 joule units, and gigajoule is 1000000000 joule units.
Formula
gigajoules = centijoules × 1e-11
This factor comes from each unit's defined relationship to the category's base unit: 1 centijoule equals 0.01 base units, and 1 gigajoule equals 1000000000 base units, so dividing one by the other gives the direct centijoule-to-gigajoule factor of 1e-11.
Simple example
1 cJ × 1e-11 = 1e-11 GJ
1 centijoule = 1e-11 gigajoules.
Real-world example
100 cJ × 1e-11 = 1e-9 GJ
100 centijoules = 1e-9 gigajoules.
Conversion table
| Centijoule (cJ) | Gigajoule (GJ) |
|---|---|
| 1 cJ | 1e-11 GJ |
| 10 cJ | 1e-10 GJ |
| 100 cJ | 1e-9 GJ |
| 500 cJ | 5e-9 GJ |
| 1,000 cJ | 1e-8 GJ |
| 2,000 cJ | 2e-8 GJ |
Reverse conversion: Gigajoule to Centijoule
1e-11 GJ × 100000000000 = 1 cJ
1e-11 gigajoules = 1 centijoule.
centijoules = gigajoules × 100000000000
For a page dedicated to this direction, see Gigajoule to Centijoule.
Understanding the Centijoule (cJ)
Centijoule is 0.01 joule units.
Understanding the Gigajoule (GJ)
Gigajoule is 1000000000 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gigajoules are in 1 centijoule?
1 centijoule equals 1e-11 gigajoules, using the exact defined conversion factor rather than an estimate.
How do I convert centijoule to gigajoule?
Multiply the centijoule value by 1e-11. The converter above does this instantly to whatever precision you set.
How do I convert gigajoule back to centijoule?
Use the reverse factor: 1 gigajoule equals 100,000,000,000 centijoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a centijoule?
Centijoule (cJ) is a unit of energy.
What is a gigajoule?
Gigajoule (GJ) is a unit of energy.
Is the centijoule to gigajoule conversion exact?
Yes. Both centijoule and gigajoule are defined by fixed standards rather than physical artifacts, so the factor of 1e-11 used above is exact to as many digits as you choose to display.