Joule to Calorie Converter
Convert joules to small calories instantly with an energy calculator built for science, nutrition, HVAC, electricity, engineering, and everyday reference.
J to cal Calculator
Enter an energy value and the conversion updates automatically.
Result updates automatically.
Formula: small calories = joules × 0.2390057361
How to Convert Joule to Calorie
Energy conversion uses joules as the SI reference unit. Multiply the source energy by the factor shown below to convert it into the selected output unit.
1 joule
0.2390057361 small calories
10 joules
2.3900573614 small calories
100 joules
23.9005736138 small calories
Energy Formula Notes
The calculator converts through joules as the base energy unit, then formats the result for the selected energy unit.
Joules to Calories Converter FAQ
Which energy units are supported?
This tool supports joules, kilojoules, BTU, small calories, kilocalories, watt-hours, kilowatt-hours, foot-pounds, and newton-meters.
How do I convert J to cal?
Multiply the J value by 0.2390057361 to get cal. The calculator performs the formula automatically.
Can I reverse the energy conversion?
Yes. Use the swap button to reverse the selected units and calculate the opposite direction.