Joule to Erg Converter
Convert Joule (J) to Erg (erg) instantly. 1 J = 10,000,000 erg.
Energy Converter
27 units available
1 J = 10,000,000 erg
Formula:
erg = J × 10,000,000With your value: 1 J = 10,000,000 erg
How big is that?
Everyday references on a logarithmic scale, all expressed in joule so you can sanity-check the result.
Other Joule to Erg conversions
Joule to Erg Conversion Table
| Joule (J) | Erg (erg) |
|---|---|
| 0.5 | 5,000,000 |
| 1 | 10,000,000 |
| 2 | 20,000,000 |
| 5 | 50,000,000 |
| 10 | 100,000,000 |
| 15 | 150,000,000 |
| 20 | 200,000,000 |
| 25 | 250,000,000 |
| 50 | 500,000,000 |
| 100 | 1,000,000,000 |
| 250 | 2,500,000,000 |
| 500 | 5,000,000,000 |
| 1000 | 10,000,000,000 |
Erg to Joule Conversion Table
| Erg (erg) | Joule (J) |
|---|---|
| 0.5 | 5.000000e-8 |
| 1 | 1.000000e-7 |
| 2 | 2.000000e-7 |
| 5 | 5.000000e-7 |
| 10 | 1.000000e-6 |
| 15 | 1.500000e-6 |
| 20 | 2.000000e-6 |
| 25 | 2.500000e-6 |
| 50 | 5.000000e-6 |
| 100 | 1.000000e-5 |
| 250 | 2.500000e-5 |
| 500 | 5.000000e-5 |
| 1000 | 1.000000e-4 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Joule (J)
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Erg (erg)
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Joule to Erg
To convert from Joule (J) to Erg (erg), multiply the value by 10,000,000.
Formula: erg = J × 10,000,000
Reverse: J = erg × 1.000000e-7
Step-by-Step Example
- Start with your value in Joule. For example: 5 J
- Multiply by the conversion factor: 5 x 10,000,000
- The result is: 50,000,000 erg
About Joule
The joule is the SI unit of energy. One joule equals the work done when a force of one newton moves an object one meter.
Common uses: physics, electrical engineering, chemistry.
About Erg
The erg (erg) is a unit of energy and work. One erg equals 1.000000 × 10^-7 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: energy calculations, engineering and science, education.
Frequently Asked Questions
How many Erg are in 1 Joule?
There are exactly 10,000,000 Erg in 1 Joule. This means the conversion factor from Joule to Erg is 10,000,000.
What is the formula to convert Joule to Erg?
The formula to convert Joule to Erg is: erg = J × 10,000,000. For example, to convert 10 Joule to Erg, you would multiply 10 by 10,000,000.
What is a Joule?
The joule is the SI unit of energy. One joule equals the work done when a force of one newton moves an object one meter.
What is a Erg?
The erg (erg) is a unit of energy and work. One erg equals 1.000000 × 10^-7 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What are the common uses of Joule?
The Joule is commonly used in physics, electrical engineering, chemistry.
Related Energy Conversions
Cite this page
UnitConvertLab. (2026). Joule to Erg converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/joule-to-erg