Convert kilocalories to J

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How to convert kilocalories to J: Enter a value in the kilocalories field and click on the "Calculate J" button. Your answer will appear in the J field.

Conversion Definitions

The following is a list of definitions relating to conversions between kilocalories and joules.

What is a kilocalorie (kcal)?

A kilocalorie is a unit of energy in the International System of Units (SI). The symbol for kilocalorie is kcal. There are 0.00023901 kilocalories in a joule. A kilocalorie is measured as the quantity of heat required to raise the temperature of 1 kilogram of water by 1°C from a standard initial temperature at a pressure of 1 atmosphere. A kilocalorie is also called a "large calorie" or "kilogram calorie".

What is a joule (J)?

A joule is a unit of energy in the International System of Units (SI). The symbol for joule is J. There are 4,184 joules in a kilocalorie.

Conversion Formula

Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.

The formula to convert from kilocalories to J is:

J = kilocalories x 4,184

Conversion Example

Next, let's look at an example showing the work and calculations that are involved in converting from kilocalories to joules (kcal to J).

Kilocalorie to Joule Conversion Example

Task: Convert 25 kilocalories to joules (show work)

Formula:
kilocalories x 4,184 = J

Calculations:
25 kilocalories x 4,184 = 104,600 J

Result:
25 kilocalories is equal to 104,600 J

Conversion Table

For quick reference purposes, below is a conversion table that you can use to convert from kilocalories to joules.

Kilocalories to Joules Conversion Chart

kilocalories (kcal)	joules (J)
1 kcal	4,184 J
2 kcal	8,368 J
3 kcal	12,552 J
4 kcal	16,736 J
5 kcal	20,920 J
6 kcal	25,104 J
7 kcal	29,288 J
8 kcal	33,472 J
9 kcal	37,656 J
10 kcal	41,840 J
20 kcal	83,680 J
30 kcal	125,520 J
40 kcal	167,360 J
50 kcal	209,200 J
75 kcal	313,800 J
100 kcal	418,400 J
250 kcal	1,046,000 J
500 kcal	2,092,000 J
750 kcal	3,138,000 J
1,000 kcal	4,184,000 J
2,500 kcal	10,460,000 J
5,000 kcal	20,920,000 J
7,500 kcal	31,380,000 J
10,000 kcal	41,840,000 J
25,000 kcal	104,600,000 J
50,000 kcal	209,200,000 J
75,000 kcal	313,800,000 J
100,000 kcal	418,400,000 J
250,000 kcal	1,046,000,000 J

Related Units

This table provides a summary of the Energy units within their respective measurement systems.

Unit	Symbol	Measurement System	Description
calories (thermochemical)	cal	International System of Units (SI)	1 cal = 4.184 J
kilocalories	kcal	International System of Units (SI)	1,000 cal = 1 kcal
British Thermal Unit	BTU or Btu	Imperial System	1 BTU = 1,055 J
joules	J	International System of Units (SI)	base unit
kilojoules	kJ	International System of Units (SI)	1,000 J = 1 kJ
megajoules	MJ	International System of Units (SI)	1,000,000 J = 1 MJ
gigajoules	GJ	International System of Units (SI)	1,000,000,000 J = 1 GJ
terajoules	TJ	International System of Units (SI)	1,000,000,000,000 J = 1 TJ

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