Microjoule is 0.000001 joule units.
Microjoules to Decajoules Converter — uJ to daJ
Convert Microjoule (uJ) to Decajoule (daJ) using the exact conversion factor (1 microjoule = 1e-7 decajoule). See the formula, worked examples, and conversion table.
Microjoules to Decajoules 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.
Decajoule is 10 joule units.
Result = input x 1e-6 / 10.
Energy units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Microjoules to Decajoules
Microjoule and Decajoule 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 decajoule is 10 joule units.
Formula
decajoules = microjoules × 1e-7
This factor comes from each unit's defined relationship to the category's base unit: 1 microjoule equals 0.000001 base units, and 1 decajoule equals 10 base units, so dividing one by the other gives the direct microjoule-to-decajoule factor of 1e-7.
Simple example
1 uJ × 1e-7 = 1e-7 daJ
1 microjoule = 1e-7 decajoules.
Real-world example
100 uJ × 1e-7 = 0.00001 daJ
100 microjoules = 0.00001 decajoules.
Conversion table
| Microjoule (uJ) | Decajoule (daJ) |
|---|---|
| 1 uJ | 1e-7 daJ |
| 10 uJ | 0.000001 daJ |
| 50 uJ | 0.000005 daJ |
| 100 uJ | 0.00001 daJ |
| 500 uJ | 0.00005 daJ |
| 1,000 uJ | 0.0001 daJ |
Reverse conversion: Decajoule to Microjoule
1e-7 daJ × 10000000 = 1 uJ
1e-7 decajoules = 1 microjoule.
microjoules = decajoules × 10000000
For a page dedicated to this direction, see Decajoule to Microjoule.
Understanding the Microjoule (uJ)
Microjoule is 0.000001 joule units.
Understanding the Decajoule (daJ)
Decajoule is 10 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many decajoules are in 1 microjoule?
1 microjoule equals 1e-7 decajoules, using the exact defined conversion factor rather than an estimate.
How do I convert microjoule to decajoule?
Multiply the microjoule value by 1e-7. The converter above does this instantly to whatever precision you set.
How do I convert decajoule back to microjoule?
Use the reverse factor: 1 decajoule equals 10,000,000 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 decajoule?
Decajoule (daJ) is a unit of engineering.
Is the microjoule to decajoule conversion exact?
Yes. Both microjoule and decajoule are defined by fixed standards rather than physical artifacts, so the factor of 1e-7 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.