ENERGY CONVERSION
Kilocalorie to Joule.
Convert kilocalorie (kcal) to joule (J), with the math explained.
THE MATH, MADE SIMPLE
How to convert kilocalorie to joule
Multiply your kilocalorie value by 4,184 to get the equivalent in joule. Both units are normalized through the joule.
J = kcal × 4,18410 kcal = 41,840 J
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.QUICK REFERENCE
kcal to J conversion table
| Kilocalorie (kcal) | Joule (J) |
|---|---|
| 1 kcal | 4,184 J |
| 2 kcal | 8,368 J |
| 5 kcal | 20,920 J |
| 10 kcal | 41,840 J |
| 20 kcal | 83,680 J |
| 50 kcal | 209,200 J |
| 100 kcal | 418,400 J |
| 500 kcal | 2,092,000 J |
| 1,000 kcal | 4,184,000 J |
About the kilocalorie
The kilocalorie (kcal) is a unit of energy. One kilocalorie equals 4,184 joule (base unit) in this calculator.
All kilocalorie conversionsAbout the joule
The joule (J) is a unit of energy. One joule equals 1 joule (base unit) in this calculator.
All joule conversionsCommon questions
What is 1 kcal in J?
One kilocalorie equals 4,184 J. 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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