Calories to Joules (cal to J) Converter
1 calorie = 4.184 joules. 1 kilocalorie (food Calorie) = 4,184 joules.
Formula:1 cal = 4.184 J
⇄ Switch to Joules To CaloriesCalorie to Joule — common values
1 cal4.184 J
100 cal418.4 J
1,000 cal4,184 J
3,600 cal15,062.4 J
10,000 cal41,840 J
1,000,000 cal4,184,000 J
3,600,000 cal15,062,400 J
How to convert Calories To Joules
To convert calories to joules, use the formula: 1 cal = 4.184 J. Enter any value in the input field above and the result appears instantly. Click the ⇄ button or use the “Switch to Joules To Calories” link to reverse the conversion.
All conversions use precise mathematical constants validated against international SI standards (NIST and ISO 80000) and are accurate to 8 significant figures.
Frequently Asked Questions
What is the formula to convert Calories To Joules?
1 cal = 4.184 J. 1 calorie = 4.184 joules. 1 kilocalorie (food Calorie) = 4,184 joules.
Is this converter free?
Yes — completely free, no registration required. Works instantly in your browser.
How do I convert Joules To Calories?
Use the Joules To Calories converter or click the ⇄ switch button above.
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