Joule to Kilocalorie Converter
無料エネルギー換算ツール, ジュール、カロリー、キロワット時、BTUを瞬時に換算
1Joule=0.0002390057Kilocalorie
1 Kilocalorie = 4184 Joule
Joule
- Symbol
- J
- System
- Metric/Imperial
- Dimension
- Various
Kilocalorie
- Symbol
- kcal
- System
- Metric/Imperial
- Dimension
- Various
Quick Reference Table
| Joule | Kilocalorie | Kilocalorie | Joule |
|---|---|---|---|
| 1 | 0.0002390057 | 1 | 4184 |
| 2 | 0.0004780115 | 2 | 8368 |
| 3 | 0.0007170172 | 3 | 12552 |
| 5 | 0.0011950287 | 5 | 20920 |
| 10 | 0.0023900574 | 10 | 41840 |
| 25 | 0.0059751434 | 25 | 104600 |
| 50 | 0.0119502868 | 50 | 209200 |
| 100 | 0.0239005736 | 100 | 418400 |
| 500 | 0.1195028681 | 500 | 2092000 |
| 1000 | 0.2390057361 | 1000 | 4184000 |
Conversion Formula
Kilocalorie = Joule × 0.0002390057
Joule = Kilocalorie × 4184
Factors are from BIPM SI brochure and NIST SP 811, stored unrounded and computed via a base unit. Reverse factor is 1 ÷ 0.0002390057.
How to convert Joule to Kilocalorie
Multiply the value in joule by 0.0002390057 to get kilocalorie. For example, 5 Joule = 0.0011950287 Kilocalorie. All results in the エネルギー 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 0.00 too early — keep full precision until the final display. For エネルギー, always verify critical calculations (medicine, engineering) with a second source.
FAQ
- How many Kilocalorie in 1 Joule?
- 1 Joule = 0.0002390057 Kilocalorie.
- How many Joule in 1 Kilocalorie?
- 1 Kilocalorie = 4184 Joule.
- What is the source?
- BIPM/NIST via OmniConverter base-unit engine. Source table and formula above are exact.
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