Calories to joules
1 calorie in joules
1 cal = 4.184 J
J = cal × 4.184
To convert calories to joules, multiply by 4.184. The table below gives the values people look up most often, and the converter works for any number.
Calories to joules table
| Calories | Joules |
|---|---|
| 1 cal | 4.184 |
| 2 cal | 8.368 |
| 3 cal | 12.552 |
| 4 cal | 16.736 |
| 5 cal | 20.92 |
| 10 cal | 41.84 |
| 15 cal | 62.76 |
| 20 cal | 83.68 |
| 25 cal | 104.6 |
| 30 cal | 125.52 |
| 40 cal | 167.36 |
| 50 cal | 209.2 |
| 75 cal | 313.8 |
| 100 cal | 418.4 |
| 250 cal | 1,046 |
| 500 cal | 2,092 |
| 1,000 cal | 4,184 |
How the conversion works
The relationship is J = cal × 4.184. Both units measure energy, so the conversion is a fixed factor that never changes.
Calorie: Thermochemical (small) calorie.
Common questions
- How many joules are in one calorie?
- One calorie equals 4.184 joules. J = cal × 4.184.
- How do you convert calories to joules?
- Use J = cal × 4.184. So 10 cal is 41.84 J.
- How many calories are in one joule?
- One joule equals 0.23901 calories, which is the reverse of the conversion above.
- Is there more than one kind of calorie?
- Thermochemical (small) calorie.
Related pages
Sources
- Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
- Calculated on this page — At One Place