A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro prefix.
Microjoules to Ergs
Convert Microjoule (uJ) to Erg (erg) instantly with an exact formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Energy calculator
Energy Converter
Convert microjoules (uJ) to ergs (erg) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
erg = uJ × 10
Results update instantly for Microjoules to Ergs conversions.
Reserved above the conversion cards and below the converter.
Formula
erg = uJ × 10
uJ = erg × 0.1
Conversion table
| 1 uJ | 10 erg |
| 5 uJ | 50 erg |
| 10 uJ | 100 erg |
| 20 uJ | 200 erg |
| 50 uJ | 500 erg |
| 100 uJ | 1000 erg |
| 500 uJ | 5000 erg |
| 1000 uJ | 10000 erg |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both microjoule and erg measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in microjoules by 10 to get ergs. To reverse the conversion, multiply a erg value by 0.1 to get back to microjoules.
Frequently asked questions
What is Microjoule (uJ)?
A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro prefix.
What is Erg (erg)?
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
How do I convert microjoules to ergs?
Multiply the microjoule value by 10 to get the equivalent in ergs. For example, 5 uJ × 10 = 50 erg.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 10 is an exact, non-rounded value.
Can I convert ergs back to microjoules?
Yes. Divide the erg value by 10, or multiply it by 0.1, to get microjoules.
Reserved between the FAQ and the article so the page stays balanced.
About converting microjoules to ergs
A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro prefix. An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
Use this calculator to move between microjoules and ergs accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.