ENERGY CONVERSION
Joule to Kilocalorie.
Convert joule (J) to kilocalorie (kcal), with the math explained.
1 J = 0.0002390057361 kcal
THE MATH, MADE SIMPLE
How to convert joule to kilocalorie
Multiply your joule value by 0.000239005736138 to get the equivalent in kilocalorie. Both units are normalized through the joule.
kcal = J × 0.000239005736110 J = 0.00239005736138 kcal
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.QUICK REFERENCE
J to kcal conversion table
| Joule (J) | Kilocalorie (kcal) |
|---|---|
| 1 J | 0.000239005736138 kcal |
| 2 J | 0.000478011472275 kcal |
| 5 J | 0.00119502868069 kcal |
| 10 J | 0.00239005736138 kcal |
| 20 J | 0.00478011472275 kcal |
| 50 J | 0.0119502868069 kcal |
| 100 J | 0.0239005736138 kcal |
| 500 J | 0.119502868069 kcal |
| 1,000 J | 0.239005736138 kcal |
About the joule
The joule (J) is a unit of energy. One joule equals 1 joule (base unit) in this calculator.
All joule conversionsAbout the kilocalorie
The kilocalorie (kcal) is a unit of energy. One kilocalorie equals 4,184 joule (base unit) in this calculator.
All kilocalorie conversionsCommon questions
What is 1 J in kcal?
One joule equals 0.000239005736138 kcal. Use the formula above for other values.
Why might another calculator show a different last digit?
Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.
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