Microjoule is 0.000001 joule units.
Microjoules to Centijoules Converter — uJ to cJ
Convert Microjoule (uJ) to Centijoule (cJ) using the exact conversion factor (1 microjoule = 0.0001 centijoule). See the formula, worked examples, and conversion table.
Microjoules 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 Microjoules to Centijoules
Microjoule and Centijoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Microjoule is 0.000001 joule units, and centijoule is 0.01 joule units.
Formula
centijoules = microjoules × 0.0001
This factor comes from each unit's defined relationship to the category's base unit: 1 microjoule equals 0.000001 base units, and 1 centijoule equals 0.01 base units, so dividing one by the other gives the direct microjoule-to-centijoule factor of 0.0001.
Simple example
1 uJ × 0.0001 = 0.0001 cJ
1 microjoule = 0.0001 centijoules.
Real-world example
100 uJ × 0.0001 = 0.01 cJ
100 microjoules = 0.01 centijoules.
Conversion table
| Microjoule (uJ) | Centijoule (cJ) |
|---|---|
| 1 uJ | 0.0001 cJ |
| 10 uJ | 0.001 cJ |
| 100 uJ | 0.01 cJ |
| 500 uJ | 0.05 cJ |
| 1,000 uJ | 0.1 cJ |
| 2,000 uJ | 0.2 cJ |
Reverse conversion: Centijoule to Microjoule
0.0001 cJ × 10000 = 1 uJ
0.0001 centijoules = 1 microjoules.
microjoules = centijoules × 10000
For a page dedicated to this direction, see Centijoule to Microjoule.
Understanding the Microjoule (uJ)
Microjoule is 0.000001 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 microjoule?
1 microjoule equals 0.0001 centijoules, using the exact defined conversion factor rather than an estimate.
How do I convert microjoule to centijoule?
Multiply the microjoule value by 0.0001. The converter above does this instantly to whatever precision you set.
How do I convert centijoule back to microjoule?
Use the reverse factor: 1 centijoule equals 10,000 microjoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a microjoule?
Microjoule (uJ) is a unit of energy.
What is a centijoule?
Centijoule (cJ) is a unit of energy.
Is the microjoule to centijoule conversion exact?
Yes. Both microjoule and centijoule are defined by fixed standards rather than physical artifacts, so the factor of 0.0001 used above is exact to as many digits as you choose to display.