How many Joules are in 1 Calorie?

There are exactly 4.184 Joules (J) in 1 Calorie (cal). This means that to find the equivalent in Joules, you multiply your Calorie value by 4.184. This conversion factor is used worldwide in science, engineering, and everyday measurements.

What is 10 Calories in Joules?

10 Calories (cal) is exactly 41.84 Joules (J). This is calculated by applying the standard conversion factor: 1 cal = 4.184 J.

What is 100 Calories in Joules?

100 Calories (cal) is exactly 418.4 Joules (J). This is calculated by applying the standard conversion factor: 1 cal = 4.184 J.

How do I convert Joules back to Calories?

To convert Joules to Calories, divide the value in Joules by 4.184. For example, 1 J = 0.2390057361 cal. You can also use the swap button on the converter above to instantly switch the conversion direction.

Why would I need to convert Calories to Joules?

Converting Calories to Joules is commonly needed in international trade, travel, academic studies, engineering projects, and everyday tasks where different measurement systems are used. Many countries use different standard units, making this conversion essential for accurate communication and calculations.

Is Calorie bigger than Joule?

To compare, look at the conversion factor: 1 cal = 4.184 J. If the result is greater than 1, then one Calorie is larger than one Joule. Conversely, 1 J = 0.2390057361 cal. Use this relationship to quickly understand the relative size of these two units.

What is the quickest way to convert Calories to Joules?

The quickest way is to multiply your Calories value by 4.184. For a mental math shortcut, remember that 1 cal is approximately 4.184 J. Round this factor to a convenient number for rough estimates, or use the UnitShift converter above for exact results instantly.

How accurate is this Calorie to Joule converter?

This converter uses full floating-point precision (64-bit double precision) for all calculations, ensuring results accurate to approximately 15 significant digits. The conversion factors between Calorie and Joule are based on internationally recognized standards. For everyday use, scientific work, and engineering applications, this level of precision exceeds typical requirements.

Calorie → Joule

From

4.184J

Conversion Table

Conversion table from Calorie to Joule
Calorie (cal)	Joule (J)
0.001 cal	0.004184 J
0.01 cal	0.04184 J
0.1 cal	0.4184 J
1 cal	4.184 J
2 cal	8.368 J
3 cal	12.552 J
4 cal	16.736 J
5 cal	20.92 J
10 cal	41.84 J
15 cal	62.76 J
20 cal	83.68 J
25 cal	104.6 J
50 cal	209.2 J
100 cal	418.4 J
250 cal	1,046 J
500 cal	2,092 J
1,000 cal	4,184 J
5,000 cal	20,920 J
10,000 cal	41,840 J

Formula

To convert Calories to Joules, multiply the value by 4.18400. For example, 5 cal equals 20.92 J. You can also use UnitShift's free online converter above for instant, accurate results without manual calculation.

Calorie → Joule: multiply the value by 4.18400

1 cal = 4.184 J. To convert Calories to Joules, multiply the calorie value by 4.184.

Quick Facts

1 cal

4.184 J

1 J

0.2390057361 cal

10 cal

41.84 J

100 cal

418.4 J

How to Convert Calories to Joules

Converting calories to joules is one of the most common energy conversions. Whether you're working with international measurements, academic research, or everyday calculations, understanding the relationship between calories and joules is essential. One calorie (cal) equals exactly 4.184 joules (J), and conversely, one joule equals 0.2390057361 calories.

This conversion is frequently used in nutrition and dietary calorie tracking and electricity consumption and billing. For quick reference: 10 calories = 41.84 joules, and 100 calories = 418.4 joules. Our converter above handles any value instantly, including decimal and negative numbers.

The calorie and joule are both units of energy. The conversion factor between them is constant, making it straightforward to convert in either direction. Other common applications include fitness and exercise energy expenditure and industrial energy efficiency analysis.

Use the conversion table below for pre-calculated values, or enter any custom number in the converter above. All calculations are performed with full floating-point precision to ensure accuracy for both everyday use and professional applications. Bookmark this page for quick access whenever you need to convert calories to joules.

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