File & Data Converters
Calories to Joules Converter
Enter a value in calories to convert it to joules, or switch units to convert the other way.
1 Calories = 4.184 Joules
All Calories conversions
Joules
4.184
Kilojoules
0.004184
Kilocalories
0.001
Watt-hours
0.001162
Kilowatt-hours
0.000001
How to use this tool
- 1Enter a value in calories.
- 2The result in joules updates instantly.
- 3Use the swap button to convert joules to calories instead.
Frequently asked questions
Is this the same as food Calories?+
No — food labels use kilocalories (Cal, capital C), which equal 1000 of these small calories.