Power and Energy
ergtoJ
Convert ergs (erg) to joules (J).
Factor1 erg = 1e-7 J
Converter
erg
Accepts numbers or expressions, e.g. 150 + 14.7
Result
J
Rendered to 6 significant figures.
Formula
Formula
J = erg × 1e-7
Multiply any value in ergs by 1e-7 to obtain the value in joules.
Worked example
Convert 1e+7 erg to J.
- 01Start with 1e+7 erg.
- 02Multiply by the conversion factor: 1e+7 × 1e-7 = 1 J.
Result1e+7 erg = 1 J
Conversion table
| erg | J |
|---|---|
| 1 | 1e-7 |
| 2 | 2e-7 |
| 5 | 5e-7 |
| 10 | 1e-6 |
| 20 | 2e-6 |
| 50 | 5e-6 |
| 100 | 1e-5 |
| 200 | 2e-5 |
| 500 | 5e-5 |
| 1000 | 1e-4 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from erg to J?
1 erg equals 1e-7 J. To convert, multiply the value in ergs by 1e-7.
How do I convert 1 erg to J?
1 erg = 1e-7 J. For any value, multiply by 1e-7.
How do I convert J back to erg?
Divide by the same factor — or equivalently, multiply by 1e+7. So 1 J = 1e+7 erg.
When would I need to convert erg to joule?
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).