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Convert Kilocalorie (Food Cal) to Joule.

Input the value of kilocalories below to convert instantly to joules with standard conversions, definitions, and equations.

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J
Value in Joules = Value in Kilocalories × 4184 Multiply the value in kilocalories by the conversion factor 4184.

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How to Convert Kilocalories to Joules

To convert kilocalorie (food cal) to joule, we use the official conversion formulas. Below is the mathematical formula, plain-English explanation, and a worked example.

kilocalorie-to-joule-formula.py
# Mathematical Formula
Value in Joules = Value in Kilocalories × 4184
# Worked Example (5 kcal)
5 kcal × 4184 = 20920.0000 J
What is a Kilocalorie (Food Cal)?

Kilocalorie (Food Cal) (kcal)

Commonly known as the food calorie (capital C), representing 1,000 gram calories.

What is a Joule?

Joule (J)

The base SI unit of energy, equal to work done by a force of one newton moving one meter.

Kilocalorie (Food Cal) to Joule Conversion Table

Kilocalorie (Food Cal) (kcal) Joule (J)
1 kcal 4184 J
2 kcal 8368 J
3 kcal 12552 J
5 kcal 20920 J
10 kcal 41840 J
15 kcal 62760 J
20 kcal 83680 J
25 kcal 104600 J
50 kcal 209200 J
100 kcal 418400 J
250 kcal 1046000 J
500 kcal 2092000 J
1000 kcal 4184000 J

Joule to Kilocalorie (Food Cal) Conversion Table

Joule (J) Kilocalorie (Food Cal) (kcal)
1 J 0.00024 kcal
2 J 0.00048 kcal
3 J 0.00072 kcal
5 J 0.0012 kcal
10 J 0.00239 kcal
15 J 0.00359 kcal
20 J 0.00478 kcal
25 J 0.00598 kcal
50 J 0.01195 kcal
100 J 0.0239 kcal
250 J 0.05975 kcal
500 J 0.1195 kcal
1000 J 0.23901 kcal
Questions

Frequently Asked Questions

How do I convert kilocalories to joules?

Multiply the value in kilocalories by the conversion factor 4184. For example, to convert 5 kilocalories to joules: 5 × 4184 = 20920.0000 J.

What is the conversion factor from kilocalorie (food cal) to joule?

The conversion factor is 4184. One kilocalorie (food cal) is equal to 4184 joules.

What is the reverse conversion from joule to kilocalorie (food cal)?

To convert joules back to kilocalories, multiply by 0.000239 (or divide the value by 4184). One joule is equal to 0.000239 kilocalories.

How many Joules are in 1 Kilowatt-hour (kWh)?

There are exactly 3,600,000 Joules (or 3.6 Megajoules) in 1 kWh.

What is the difference between a calorie and a Calorie?

A lowercase calorie (cal) is a small metric unit (4.184 J). A capitalized Calorie (Cal) is a food calorie, which is actually a kilocalorie (1,000 small calories or 4,184 J).

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