Joule to Calorie Converter
Free Energy Converter, Convert Joules, Calories, Kilowatt-Hours & BTU Instantly
1Joule=0.2390057361Calorie
1 Calorie = 4.184 Joule
Joule
- Symbol
- J
- System
- Metric/Imperial
- Dimension
- Various
Calorie
- Symbol
- cal
- System
- Metric/Imperial
- Dimension
- Various
Quick Reference Table
| Joule | Calorie | Calorie | Joule |
|---|---|---|---|
| 1 | 0.2390057361 | 1 | 4.184 |
| 2 | 0.4780114723 | 2 | 8.368 |
| 3 | 0.7170172084 | 3 | 12.552 |
| 5 | 1.1950286807 | 5 | 20.92 |
| 10 | 2.3900573614 | 10 | 41.84 |
| 25 | 5.9751434034 | 25 | 104.6 |
| 50 | 11.9502868069 | 50 | 209.2 |
| 100 | 23.9005736138 | 100 | 418.4 |
| 500 | 119.5028680688 | 500 | 2092 |
| 1000 | 239.0057361377 | 1000 | 4184 |
Conversion Formula
Calorie = Joule × 0.2390057361
Joule = Calorie × 4.184
Factors are from BIPM SI brochure and NIST SP 811, stored unrounded and computed via a base unit. Reverse factor is 1 ÷ 0.2390057361.
How to convert Joule to Calorie
Multiply the value in joule by 0.2390057361 to get calorie. For example, 5 Joule = 1.1950286807 Calorie. All results in the energy converter update instantly as you type, so you can see every unit at once without manual math.
Common mistakes
Do not round the factor to 0.23 too early — keep full precision until the final display. For energy, always verify critical calculations (medicine, engineering) with a second source.
FAQ
- How many Calorie in 1 Joule?
- 1 Joule = 0.2390057361 Calorie.
- How many Joule in 1 Calorie?
- 1 Calorie = 4.184 Joule.
- What is the source?
- BIPM/NIST via OmniConverter base-unit engine. Source table and formula above are exact.
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