Attojoule is 1e-18 joule units.
Attojoules to Ergs Converter — aJ to erg
Convert Attojoule (aJ) to Erg (erg) using the exact conversion factor (1 attojoule = 1e-11 erg). See the formula, worked examples, and conversion table.
Attojoules to Ergs converter
Converter
Energy Converter
Convert joules, calories, kilowatt-hours, BTU, electronvolts, therms, and mechanical work units.
Context values
Some unit families need one extra value for a physically accurate result.
An erg is a CGS energy unit.
Result = input x 1e-18 / 1e-7.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Attojoules to Ergs
Attojoule and Erg both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Attojoule is 1e-18 joule units, and an erg is a CGS energy unit.
Formula
ergs = attojoules × 1e-11
This factor comes from each unit's defined relationship to the category's base unit: 1 attojoule equals 1e-18 base units, and 1 erg equals 1e-7 base units, so dividing one by the other gives the direct attojoule-to-erg factor of 1e-11.
Simple example
1 aJ × 1e-11 = 1e-11 erg
1 attojoule = 1e-11 ergs.
Real-world example
100 aJ × 1e-11 = 1e-9 erg
100 attojoules = 1e-9 ergs.
Conversion table
| Attojoule (aJ) | Erg (erg) |
|---|---|
| 1 aJ | 1e-11 erg |
| 10 aJ | 1e-10 erg |
| 100 aJ | 1e-9 erg |
| 500 aJ | 5e-9 erg |
| 1,000 aJ | 1e-8 erg |
| 2,000 aJ | 2e-8 erg |
Reverse conversion: Erg to Attojoule
1e-11 erg × 100000000000 = 1 aJ
1e-11 ergs = 1 attojoules.
attojoules = ergs × 100000000000
For a page dedicated to this direction, see Erg to Attojoule.
Understanding the Attojoule (aJ)
Attojoule is 1e-18 joule units.
Understanding the Erg (erg)
An erg is a CGS energy unit.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ergs are in 1 attojoule?
1 attojoule equals 1e-11 ergs, using the exact defined conversion factor rather than an estimate.
How do I convert attojoule to erg?
Multiply the attojoule value by 1e-11. The converter above does this instantly to whatever precision you set.
How do I convert erg back to attojoule?
Use the reverse factor: 1 erg equals 100,000,000,000 attojoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a attojoule?
Attojoule (aJ) is a unit of energy.
What is a erg?
Erg (erg) is a unit of energy.
Is the attojoule to erg conversion exact?
Yes. Both attojoule and erg are defined by fixed standards rather than physical artifacts, so the factor of 1e-11 used above is exact to as many digits as you choose to display.