Convert Joule to Kilocalorie (J to kcal)

1 J = 0.0002390057 kcal

How to convert joules to kilocalories

To convert joules to kilocalories, divide joules by 4,184

To convert kilocalories to joules, multiply kilocalories by 4,184

Common joule to kilocalorie examples

Joule (J) Kilocalorie (kcal)
1 J 0.0002390057 kcal
10 J 0.0023900574 kcal
50 J 0.0119502868 kcal
100 J 0.0239005736 kcal
250 J 0.059751434 kcal
500 J 0.1195028681 kcal
1,000 J 0.2390057361 kcal
10,000 J 2.3900573614 kcal
100,000 J 23.9005736138 kcal
1,000,000 J 239.0057361377 kcal

Frequently asked questions

How many kilocalories are in 100 joules?

100 J equals about 0.023901 kcal.

What is the joules to kilocalories formula?

Use kilocalories = joules × 0.000239005736. For reverse conversion, joules = kilocalories × 4,184.

Can I convert kilocalories to joules too?

Yes. The calculator supports two-way conversion. Edit either field and the other updates instantly.

Is this conversion exact?

The converter uses fixed unit factors. Display values are rounded for readability.