Exajoule is 1000000000000000000 joule units.
Exajoules to Centijoules Converter — EJ to cJ
Convert Exajoule (EJ) to Centijoule (cJ) using the exact conversion factor (1 exajoule = 1e+20 centijoule). See the formula, worked examples, and conversion table.
Exajoules to Centijoules 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.
Centijoule is 0.01 joule units.
Result = input x 1e+18 / 0.01.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Exajoules to Centijoules
Exajoule and Centijoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Exajoule is 1000000000000000000 joule units, and centijoule is 0.01 joule units.
Formula
centijoules = exajoules × 1e+20
This factor comes from each unit's defined relationship to the category's base unit: 1 exajoule equals 1e+18 base units, and 1 centijoule equals 0.01 base units, so dividing one by the other gives the direct exajoule-to-centijoule factor of 1e+20.
Simple example
1 EJ × 1e+20 = 1e+20 cJ
1 exajoule = 1e+20 centijoules.
Real-world example
100 EJ × 1e+20 = 1e+22 cJ
100 exajoules = 1e+22 centijoules.
Conversion table
| Exajoule (EJ) | Centijoule (cJ) |
|---|---|
| 1 EJ | 1e+20 cJ |
| 10 EJ | 1e+21 cJ |
| 100 EJ | 1e+22 cJ |
| 500 EJ | 5e+22 cJ |
| 1,000 EJ | 1e+23 cJ |
| 2,000 EJ | 2e+23 cJ |
Reverse conversion: Centijoule to Exajoule
1e+20 cJ × 1e-20 = 1 EJ
1e+20 centijoules = 1 exajoule.
exajoules = centijoules × 1e-20
For a page dedicated to this direction, see Centijoule to Exajoule.
Understanding the Exajoule (EJ)
Exajoule is 1000000000000000000 joule units.
Understanding the Centijoule (cJ)
Centijoule is 0.01 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many centijoules are in 1 exajoule?
1 exajoule equals 1e+20 centijoules, using the exact defined conversion factor rather than an estimate.
How do I convert exajoule to centijoule?
Multiply the exajoule value by 1e+20. The converter above does this instantly to whatever precision you set.
How do I convert centijoule back to exajoule?
Use the reverse factor: 1 centijoule equals 1e-20 exajoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a exajoule?
Exajoule (EJ) is a unit of energy.
What is a centijoule?
Centijoule (cJ) is a unit of energy.
Is the exajoule to centijoule conversion exact?
Yes. Both exajoule and centijoule are defined by fixed standards rather than physical artifacts, so the factor of 1e+20 used above is exact to as many digits as you choose to display.