Convert Gigajoule to Erg
Convert gigajoules to ergs by entering a value below.
How to Convert Gigajoules to Ergs
The gigajoule and erg are both units of energy. By definition, 1 gigajoule equals exactly 1e16 ergs. This means to convert gigajoules to ergs, you multiply by 1e16.
Formula
Step-by-Step Example
Convert 5 GJ to ergs:
We need to convert gigajoules to ergs
Since 1 GJ = 1e16 erg, multiply by 1e16
5 × 1e16 = 5e16
5 GJ = 5e16 erg
Gigajoule to Erg Conversion Table
Quick reference table for common gigajoule to erg conversions. Click any value for detailed calculation.
| Gigajoules (GJ) | Ergs (erg) |
|---|---|
| 0.1 GJ | 1e15 erg |
| 0.5 GJ | 5e15 erg |
| 1 GJ | 1e16 erg |
| 2 GJ | 2e16 erg |
| 5 GJ | 5e16 erg |
| 10 GJ | 1e17 erg |
| 25 GJ | 2.5e17 erg |
| 50 GJ | 5e17 erg |
| 100 GJ | 1e18 erg |
About These Units
Gigajoule (GJ)
A gigajoule (GJ) equals 1 billion joules or approximately 277.8 kilowatt-hours. Gigajoules measure natural gas billing, industrial energy use, and building energy consumption. One GJ equals about 26.8 cubic meters of natural gas.
Erg (erg)
An erg is the CGS (centimeter-gram-second) unit of energy equal to 10⁻⁷ joules or 1 dyne-centimeter. Ergs appear in older scientific literature and some astronomical calculations. One joule equals 10 million ergs. Rarely used in modern applications.
Frequently Asked Questions
How do I convert gigajoules to ergs?
To convert gigajoules to ergs, multiply the value by 1e16. For example, 10 GJ = 1e17 erg.
How many ergs are in 1 gigajoule?
1 gigajoule equals 1e16 ergs.
What is the formula for gigajoules to ergs?
The formula is: erg = GJ × 1e16.