Convert values instantly
Change the value or either unit to update the result immediately. Your input stays in this browser.
Converted value0.001 kJ
1 J = 0.001 kJ
Calculations run locally in your browser. No values are uploaded or saved.
How to use this converter
- Enter a value or integer in the input field.
- Choose the source and destination units, or the input number system.
- Review the result, which updates as you change the value or selections. Select Clear to reset the input.
All conversion calculations run in your browser and your values are not sent to QuickQR.
Conversion information
Convert the source value to joules, then divide by the destination unit’s joule factor. Calories are thermochemical calories (4.184 J); BTU uses the international table definition.
Frequently asked questions
How does the energy converter work?
Convert energy between joules, calories, watt-hours, kilowatt-hours, electronvolts and BTUs.
Are my conversion values uploaded?
No. Conversion calculations run locally in your browser. QuickQR does not receive or store the values you enter.
Can I use the energy converter on my phone?
Yes. The converter is designed for mobile, tablet and desktop browsers.