⚡
Immediate conversion
Enter a value, choose the units and press the button.
Online Calculator
Energy converter
Convert energy between common SI units and everyday units.
Information
🔒
Local processing
The conversion is done directly in your browser.
💸
Free
No registration, external API or subscription required.
Frequently asked questions
How many joules do you have 1 kWh?
1 kWh equals 3,600,000 J.
How many joules has 1 Wh?
1 Wh equals 3,600 J.
How many joules have a calorie?
One thermochemical calorie equals 4.184 J.
Does it work in both directions?
Yes. You can choose any available unit as source and destination.