kcal to Joules Converter
Formula:1 kcal = 4,184 J
⇄ Switch to Joules To KcalKilocalorie to Joule — common values
1 kcal4,184 J
100 kcal418,400 J
1,000 kcal4,184,000 J
3,600 kcal15,062,400 J
10,000 kcal41,840,000 J
1,000,000 kcal4,184,000,000 J
3,600,000 kcal15,062,400,000 J
How to convert Kcal To Joules
1 kcal = 4,184 J.
To convert kcal to joules, use the formula: 1 kcal = 4,184 J. Enter any value in the input field above and the result appears instantly. Click the ⇄ button to reverse the conversion direction.
All conversions use precise mathematical constants validated against international SI standards (NIST and ISO 80000), accurate to 8 significant figures.
Frequently Asked Questions
How many Joules are in one Kilocalorie?
1 kcal = 4,184 J. 1 kcal (food Calorie) = 4,184 joules. Used in nutrition, dietetics and exercise science.
What is the formula to convert Kilocalorie to Joule?
1 kcal = 4,184 J. Multiply the Kilocalorie value by the conversion factor to get Joule.
Is this Kilocalorie to Joule converter free?
Yes — completely free, no registration required. Works instantly in your browser using precise mathematical constants validated against SI standards.
More Energy conversions
Need more energy conversions?
The full converter supports all unit combinations