Joules to Calories (J to cal)
Free online joule to calorie converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
ENERGY CONVERTER — INSTANT RESULT
Formula: multiply the joule value by 0.23900574 — i.e. cal = J × 0.23900574
Quick check: 1 J = 0.23900574 cal
Quick check: 1 J = 0.23900574 cal
Joules to Calories conversion table
| Joules (J) | Calories (cal) |
|---|---|
| 1 J | 0.23900574 cal |
| 2 J | 0.47801147 cal |
| 3 J | 0.71701721 cal |
| 4 J | 0.95602294 cal |
| 5 J | 1.19502868 cal |
| 6 J | 1.43403442 cal |
| 7 J | 1.67304015 cal |
| 8 J | 1.91204589 cal |
| 9 J | 2.15105163 cal |
| 10 J | 2.39005736 cal |
| 15 J | 3.58508604 cal |
| 20 J | 4.78011472 cal |
| 25 J | 5.9751434 cal |
| 30 J | 7.17017208 cal |
| 40 J | 9.56022945 cal |
| 50 J | 11.95028681 cal |
| 75 J | 17.92543021 cal |
| 100 J | 23.90057361 cal |
| 250 J | 59.75143403 cal |
| 500 J | 119.50286807 cal |
| 1,000 J | 239.00573614 cal |
How to convert joules to calories
To convert joules to calories, multiply the amount in joules by 0.23900574. For example, 10 J = 2.39005736 cal. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert between joules, calories, BTU, kilowatt-hours and foot-pounds. The joule is the SI unit of energy; the thermochemical calorie is defined as exactly 4.184 J.
Frequently asked questions
How many calories are in one joule?
One joule is exactly 0.23900574 calories.
How do I convert J to cal?
Multiply the J value by 0.23900574 to get cal. The converter at the top of this page does this automatically and works in both directions.
How much is 100 joules in calories?
100 joules equals 23.90057361 calories.