Microjoule is 0.000001 joule units.
Microjoules to Decijoules Converter — uJ to dJ
Convert Microjoule (uJ) to Decijoule (dJ) using the exact conversion factor (1 microjoule = 0.00001 decijoule). See the formula, worked examples, and conversion table.
Microjoules to Decijoules converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Decijoule is 0.1 joule units.
Result = input x 1e-6 / 0.1.
Energy units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Microjoules to Decijoules
Microjoule and Decijoule both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Microjoule is 0.000001 joule units, and decijoule is 0.1 joule units.
Formula
decijoules = microjoules × 0.00001
This factor comes from each unit's defined relationship to the category's base unit: 1 microjoule equals 0.000001 base units, and 1 decijoule equals 0.1 base units, so dividing one by the other gives the direct microjoule-to-decijoule factor of 0.00001.
Simple example
1 uJ × 0.00001 = 0.00001 dJ
1 microjoule = 0.00001 decijoules.
Real-world example
100 uJ × 0.00001 = 0.001 dJ
100 microjoules = 0.001 decijoules.
Conversion table
| Microjoule (uJ) | Decijoule (dJ) |
|---|---|
| 1 uJ | 0.00001 dJ |
| 10 uJ | 0.0001 dJ |
| 50 uJ | 0.0005 dJ |
| 100 uJ | 0.001 dJ |
| 500 uJ | 0.005 dJ |
| 1,000 uJ | 0.01 dJ |
Reverse conversion: Decijoule to Microjoule
0.00001 dJ × 100000 = 1 uJ
0.00001 decijoules = 1 microjoules.
microjoules = decijoules × 100000
For a page dedicated to this direction, see Decijoule to Microjoule.
Understanding the Microjoule (uJ)
Microjoule is 0.000001 joule units.
Understanding the Decijoule (dJ)
Decijoule is 0.1 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many decijoules are in 1 microjoule?
1 microjoule equals 0.00001 decijoules, using the exact defined conversion factor rather than an estimate.
How do I convert microjoule to decijoule?
Multiply the microjoule value by 0.00001. The converter above does this instantly to whatever precision you set.
How do I convert decijoule back to microjoule?
Use the reverse factor: 1 decijoule equals 100,000 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 engineering.
What is a decijoule?
Decijoule (dJ) is a unit of engineering.
Is the microjoule to decijoule conversion exact?
Yes. Both microjoule and decijoule are defined by fixed standards rather than physical artifacts, so the factor of 0.00001 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.