Power and Energy
Jtoerg
Convert joules (J) to ergs (erg).
Factor1 J = 1e+7 erg
Converter
J
Accepts numbers or expressions, e.g. 150 + 14.7
Result
erg
Rendered to 6 significant figures.
Formula
Formula
erg = J × 1e+7
Multiply any value in joules by 1e+7 to obtain the value in ergs.
Worked example
Convert 1 J to erg.
- 01Start with 1 J.
- 02Multiply by the conversion factor: 1 × 1e+7 = 1e+7 erg.
Result1 J = 1e+7 erg
Conversion table
| J | erg |
|---|---|
| 1 | 1e+7 |
| 2 | 2e+7 |
| 5 | 5e+7 |
| 10 | 1e+8 |
| 20 | 2e+8 |
| 50 | 5e+8 |
| 100 | 1e+9 |
| 200 | 2e+9 |
| 500 | 5e+9 |
| 1000 | 1e+10 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from J to erg?
1 J equals 1e+7 erg. To convert, multiply the value in joules by 1e+7.
How do I convert 1 J to erg?
1 J = 1e+7 erg. For any value, multiply by 1e+7.
How do I convert erg back to J?
Divide by the same factor — or equivalently, multiply by 1e-7. So 1 erg = 1e-7 J.
When would I need to convert joule to erg?
Energy conversions are needed when reconciling fuel/electrical billing, calculating thermal duties, and aligning calorimetry or HHV/LHV figures across data sources.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).