At One Place

Joules to calories

1 joule in calories
1 J = 0.23901 cal
cal = J × 0.2390057361

To convert joules to calories, multiply by 0.2390057361. The table below gives the values people look up most often, and the converter works for any number.

Joules to calories table

Common joule values converted to calories.
Joules Calories
1 J 0.23901
2 J 0.47801
3 J 0.71702
4 J 0.95602
5 J 1.195029
10 J 2.390057
15 J 3.585086
20 J 4.780115
25 J 5.975143
30 J 7.170172
40 J 9.560229
50 J 11.95029
75 J 17.92543
100 J 23.90057
250 J 59.75143
500 J 119.5029
1,000 J 239.0057

How the conversion works

The relationship is cal = J × 0.2390057361. Both units measure energy, so the conversion is a fixed factor that never changes.

Calorie: Thermochemical (small) calorie.

Common questions

How many calories are in one joule?
One joule equals 0.23901 calories. cal = J × 0.2390057361.
How do you convert joules to calories?
Use cal = J × 0.2390057361. So 10 J is 2.390057 cal.
How many joules are in one calorie?
One calorie equals 4.184 joules, which is the reverse of the conversion above.
Is there more than one kind of calorie?
Thermochemical (small) calorie.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked