Megajoule is 1000000 joule units.
Megajoules to Centijoules Converter — MJ to cJ
Convert Megajoule (MJ) to Centijoule (cJ) using the exact conversion factor (1 megajoule = 100,000,000 centijoule). See the formula, worked examples, and conversion table.
Megajoules 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+6 / 0.01.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Megajoules to Centijoules
Megajoule and Centijoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Megajoule is 1000000 joule units, and centijoule is 0.01 joule units.
Formula
centijoules = megajoules × 100000000
This factor comes from each unit's defined relationship to the category's base unit: 1 megajoule equals 1000000 base units, and 1 centijoule equals 0.01 base units, so dividing one by the other gives the direct megajoule-to-centijoule factor of 100000000.
Simple example
1 MJ × 100000000 = 100,000,000 cJ
1 megajoule = 100,000,000 centijoules.
Real-world example
100 MJ × 100000000 = 10,000,000,000 cJ
100 megajoules = 10,000,000,000 centijoules.
Conversion table
| Megajoule (MJ) | Centijoule (cJ) |
|---|---|
| 1 MJ | 100,000,000 cJ |
| 10 MJ | 1,000,000,000 cJ |
| 100 MJ | 10,000,000,000 cJ |
| 500 MJ | 50,000,000,000 cJ |
| 1,000 MJ | 100,000,000,000 cJ |
| 2,000 MJ | 200,000,000,000 cJ |
Reverse conversion: Centijoule to Megajoule
1 cJ × 1e-8 = 1e-8 MJ
1 centijoule = 1e-8 megajoules.
megajoules = centijoules × 1e-8
For a page dedicated to this direction, see Centijoule to Megajoule.
Understanding the Megajoule (MJ)
Megajoule is 1000000 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 megajoule?
1 megajoule equals 100,000,000 centijoules, using the exact defined conversion factor rather than an estimate.
How do I convert megajoule to centijoule?
Multiply the megajoule value by 100000000. The converter above does this instantly to whatever precision you set.
How do I convert centijoule back to megajoule?
Use the reverse factor: 1 centijoule equals 1e-8 megajoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a megajoule?
Megajoule (MJ) is a unit of energy.
What is a centijoule?
Centijoule (cJ) is a unit of energy.
Is the megajoule to centijoule conversion exact?
Yes. Both megajoule and centijoule are defined by fixed standards rather than physical artifacts, so the factor of 100000000 used above is exact to as many digits as you choose to display.