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Convert joules to kilocalories

Convert joules (J) to kilocalories (kcal). 1 J = 0.000239006 kcal, and 1 kcal = 4,184 J.

1 J = 0.000239006 kcal

Joules to KCAL formula

kcal = J ÷ 4,184

Divide the number of joules by 4,184.

Example: To convert 1 J to kilocalories: 1 ÷ 4,184 = 0.000239006 kcal.

Quick answers

What is 1 J in kilocalories?
1 J = 0.000239006 kcal
What is 1,000 J in kilocalories?
1,000 J = 0.239006 kcal

Joules to KCAL conversion table

KCAL to Joules table
joules (J)kilocalories (kcal)
1 J0.000239006 kcal
10 J0.00239006 kcal
100 J0.0239006 kcal
1,000 J0.239006 kcal
4,184 J1 kcal
10,000 J2.39006 kcal
100,000 J23.9006 kcal
1,000,000 J239.006 kcal
3,600,000 J860.421 kcal

Frequently asked questions

How many joules are in a kilocalorie?

There are 4,184 joules in a kilocalorie (1 kcal = 4,184 J), so 1 J = 0.000239006 kcal.

How do I convert joules to kilocalories?

Divide the number of joules by 4,184. To convert 1 J to kilocalories: 1 ÷ 4,184 = 0.000239006 kcal.

Is the Joules to KCAL conversion exact?

Yes. Both units are defined exactly, so 1 joule is exactly 0.000239005736138 kilocalories. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

What is 1 J in kilocalories?

1 J = 0.000239006 kcal.

How do I convert kilocalories back to joules?

Use the reverse relationship: 1 kcal = 4,184 J. The KCAL to Joules page has a converter and a full table.

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