Joule to Erg
Convert Joule to Erg instantly. Free online scientific unit converter with 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
Converter
Scientific Units Converter
Convert SI derived units, scientific notation-friendly units, atomic units, and lab measurements.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Results update instantly for Joule to Erg conversions.
Reserved above the conversion cards and below the converter.
Formula
erg = joule × 10000000
joule = erg × 1e-07
Conversion table
| 1 J | 1e+07 erg |
| 5 J | 5e+07 erg |
| 10 J | 1e+08 erg |
| 20 J | 2e+08 erg |
| 50 J | 5e+08 erg |
| 100 J | 1e+09 erg |
| 500 J | 5e+09 erg |
| 1000 J | 1e+10 erg |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is the joule (J). The joule is the SI derived unit of energy.
What is the destination unit in this conversion?
The destination unit is the erg (erg). An erg is a CGS energy unit.
How do I convert joule to erg?
Multiply the joule value by 10000000. For example, 10 J × 10000000 = 1e+08 erg.
Is the joule to erg conversion exact?
Yes. The relationship between these units is a fixed mathematical or SI-defined ratio, so the conversion factor is exact rather than a measured approximation.
Where is this conversion commonly used?
It's used whenever a value expressed in joule needs to be compared with, or reported in, erg, such as in engineering, scientific, or laboratory calculations.
Can I convert erg back to joule?
Yes. Multiply the erg value by 1e-07 to get joule.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts joule (J) to erg (erg) within the scientific units converter.
The joule is the SI derived unit of energy.
An erg is a CGS energy unit.
The formula is erg = joule × 10000000, based on each unit's fixed relationship to the scientific converter's reference units.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common joule values already converted to erg.