⚡ Energy
ergs to joules Converter
Convert ergs to joules instantly with a reference table.
Quick answer: To convert ergs to joules, multiply by 1e-07. For example, 1 ergs = 1e-07 joules. Use the calculator below for any value.
ergs to joules
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Common conversions
| ergs | joules |
|---|
Formula:
How to convert ergs to joules
1
Enter your value
Type the number of ergs you want to convert into the left box. The result in joules appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — joules to ergs. Your current value carries across so you don't have to re-enter anything.
3
About ergs and joules
ergs and joules are both energy measurements.
💡 Did you know?
1 erg = 10⁻⁷ joules. The erg is the CGS (centimetre-gram-second) unit of energy, now largely replaced by the joule. 1 erg is the kinetic energy of a 2g mass moving at 1 cm/s. Earthquakes used to be measured in ergs — a magnitude 8 earthquake releases about 10¹⁷ ergs = 10¹⁰ joules.
📊 Common conversions at a glance
| ergs | joules |
|---|---|
| 1 | 1e-07 |
| 10 | 1e-06 |
| 100 | 1e-05 |
| 1000 | 0.0001 |
| 10000 | 0.001 |
| 100000 | 0.01 |
Reviewed for 2026. ergs ↔ joules conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.