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Kilocalories to Joules

Convert kilocalories (kcal) to joules (J). Type in either box; the other updates as you go.

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1 kcal = 4,184 J

1 kilocalorie equals4,184 J
1 joule equals0.0002390057361 kcal
FormulaJ = kcal × 4,184

How to convert kilocalories to joules

To convert kilocalories to joules, multiply the number of kilocalories by 4,184.

J = kcal × 4,184

Example

Convert 5 kilocalories to joules:

5 kcal × 4,184 = 20,920 J

Kilocalorie to joule conversion chart

Kilocalories (kcal)Joules (J)
1 kcal4,184 J
2 kcal8,368 J
3 kcal12,552 J
4 kcal16,736 J
5 kcal20,920 J
6 kcal25,104 J
7 kcal29,288 J
8 kcal33,472 J
9 kcal37,656 J
10 kcal41,840 J
12 kcal50,208 J
15 kcal62,760 J
20 kcal83,680 J
25 kcal104,600 J
30 kcal125,520 J
40 kcal167,360 J
50 kcal209,200 J
60 kcal251,040 J
70 kcal292,880 J
75 kcal313,800 J
80 kcal334,720 J
90 kcal376,560 J
100 kcal418,400 J
150 kcal627,600 J
200 kcal836,800 J
250 kcal1,046,000 J
500 kcal2,092,000 J
1,000 kcal4,184,000 J

Going the other way? See the joules to kilocalories chart.

About the units

Kilocalorie (kcal)

A kilocalorie is 1,000 small calories. The "Calories" on US food labels are kilocalories.

Joule (J)

The joule is the SI unit of energy: the work done by a force of one newton over one meter.

Frequently asked questions

How many joules are in a kilocalorie?

There are 4,184 joules in a kilocalorie.

How many kilocalories are in a joule?

There are 0.0002390057361 kilocalories in a joule.

How do you convert kilocalories to joules?

To convert kilocalories to joules, multiply the number of kilocalories by 4,184.

What is 5 kilocalories in joules?

5 kilocalories equals 20,920 joules.

Convert between joules, calories, kilocalories, kilowatt-hours and BTU. Open the energy converter to see a value in every unit at once.