Joules to Calories (J to cal)

Convert joules to calories instantly. 1 joule = 0.2390057361 calories, so divide the number of joules by 4.184. Includes worked examples and a full J to cal table.

How to convert joules to calories

1 joule = 0.2390057361 calories and 1 calorie = 4.184 joules. To convert joules to calories, divide by 4.184:

cal = J ÷ 4.184

Examples

  • 1 J ÷ 4.184 = 0.2390057361 cal
  • 100 J ÷ 4.184 = 23.90057361 cal
  • 4,184 J ÷ 4.184 = 1,000 cal

J to cal conversion table

Joules (J)Calories (cal)
1 J0.2390057361 cal
2 J0.4780114723 cal
3 J0.7170172084 cal
4 J0.9560229446 cal
5 J1.195028681 cal
6 J1.434034417 cal
7 J1.673040153 cal
8 J1.912045889 cal
9 J2.151051625 cal
10 J2.390057361 cal
12 J2.868068834 cal
15 J3.585086042 cal
20 J4.780114723 cal
25 J5.975143403 cal
30 J7.170172084 cal
40 J9.560229446 cal
50 J11.95028681 cal
60 J14.34034417 cal
70 J16.73040153 cal
75 J17.92543021 cal
80 J19.12045889 cal
90 J21.51051625 cal
100 J23.90057361 cal
150 J35.85086042 cal
200 J47.80114723 cal
250 J59.75143403 cal
500 J119.5028681 cal
1,000 J239.0057361 cal
5,000 J1,195.028681 cal
10,000 J2,390.057361 cal

What is a joule?

The joule is the SI unit of energy: the work done by a force of one newton over one metre, or one watt for one second.

What is a calorie?

A (small) calorie is 4.184 joules, the energy to warm 1 gram of water by 1 °C.

Related conversions

Calories to joulesKilowatt-hours (units) to joulesJoules to kilowatt-hours (units)British thermal units to joulesElectronvolts to joulesAll energy units

Frequently asked questions

How do I convert joules to calories?

Divide the value in joules by 4.184. 1 joule = 0.2390057361 calories.

How many joules are in one calorie?

1 calorie = 4.184 joules.

What is 100 J in cal?

100 J = 23.90057361 cal.

What is 4,184 J in cal?

4,184 J = 1,000 cal.