joule → cal converter

Convert joules to calories (Energy)

1 joule = 0.2390057361 cal · 1 cal = 4.184 joule

Common values: 10 joule 50 joule 100 joule 500 joule 1000 joule

10 joule = 2.390057361 cal

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Joules to calories Conversion

1 joules (joule) is equal to 0.2390057361 calories (cal).

1 joule = 0.2390057361 cal

or

1 cal = 4.184 joule

Formula

To convert a energy from joules (joule) to calories (cal), divide the energy in joules by 4.184

e(cal) = e(joule) / 4.184

Examples:

Convert 10 joules to calories:

e(cal) = 10joule / 4.184 = 2.390057361 cal

Conversion table

Joules (joule) Calories (cal)
1 joule 0.239005736 cal
2 joule 0.478011472 cal
3 joule 0.717017208 cal
5 joule 1.195028681 cal
10 joule 2.390057361 cal
20 joule 4.780114723 cal
25 joule 5.975143403 cal
50 joule 11.950286807 cal
100 joule 23.900573614 cal
250 joule 59.751434034 cal
500 joule 119.502868069 cal
1000 joule 239.005736138 cal
Calories (cal) Joules (joule)
1 cal 4.184 joule
2 cal 8.368 joule
3 cal 12.552 joule
5 cal 20.92 joule
10 cal 41.84 joule
20 cal 83.68 joule
25 cal 104.6 joule
50 cal 209.2 joule
100 cal 418.4 joule
250 cal 1046 joule
500 cal 2092 joule
1000 cal 4184 joule

Frequently asked questions

How do I convert joules to calories?

Divide the value in joules by 4.184 to get the result in calories. For example, 5 joule ÷ 4.184 = 1.195028681 cal.

How many calories are in 1 joules?

1 joules (joule) is equal to 0.239005736 calories (cal).

How do I convert calories back to joules?

Use the inverse operation: multiply the value in calories by 4.184 to get the result in joules.

How accurate is the joules to calories conversion?

The converter multiplies by the conversion factor 4.184 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.

Sources

Conversion factors are based on internationally recognised standards:

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