Joules to Calories

Convert joules to calories instantly — type a value, get the answer.

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Calories0.2390cal

Multiply joules by 0.239005736138 to get calories. 1 J = 0.239005736138 cal.

Joules (J)Calories (cal)
1 J0.239 cal
2 J0.478 cal
5 J1.195 cal
10 J2.3901 cal
25 J5.9751 cal
50 J11.9503 cal
100 J23.9006 cal

Common joules-to-calories conversions, rounded to 4 decimals.

How to convert joules to calories

Multiply the number of joules by 0.239005736138. For example, 10 J × 0.239005736138 = 2.3901 cal. The converter above does this for any value instantly, and the table below lists the conversions people look up most.

Converting calories back to joules

To go the other way, divide the cal value by 0.239005736138 — or multiply by 4.184. So 1 cal ≈ 4.184 J.

Questions

How many calories are in a joule?
One joule equals 0.239005736138 calories. Multiply any J figure by 0.239005736138 to convert it to cal.
How do I convert calories back to joules?
Divide the cal value by 0.239005736138, or multiply by 4.184. For example, 5 cal ≈ 20.92 J.
What is 10 J in cal?
10 J = 2.3901 cal. Type any value into the converter above to see its calories equivalent.