Joules to Calories Converter
Convert energy from joules (J) to calories (cal). Includes rounding controls, quick references, and input validation.
Enter joules and convert. Press Ctrl/Cmd + Enter.
Result will appear here.
| Reference | J | cal |
|---|
Privacy: runs locally in your browser. No inputs are stored or transmitted.
How it works
cal = J ÷ 4.184
Reverse: J = cal × 4.184
Examples
- 4.184 J = 1 cal
- 100 J ≈ 23.901 cal
- 1000 J ≈ 239.006 cal
FAQ
- How do you convert joules to calories?
Divide joules by 4.184 to get calories.
- What is 1000 joules in calories?
1000 joules equals about 239.006 calories.
- Is this food Calories or small calories?
This page uses small calories (cal). Food Calories are kilocalories (kcal), which are 1,000 small calories.
- Are my inputs stored?
No. All calculations run locally in your browser.