Convert Calorie to Joule (cal to J)
Instant precision conversion from Calorie (cal) to Joule (J) in Energy.
⚡ Direct Answer: 1 cal to J
1 Calorie (cal) equals exactly 4.184 Joule (J).
To convert from Calorie to Joule, multiply the quantity by 4.184 (or divide by 0.239006).
📐 How Calorie (cal) and Joule (J) Relate
In metrology, energy quantifies capacity to perform mechanical work or transfer heat ($M \cdot L^2 / T^2$). Within this domain, Calorie (cal) and Joule (J) originate from SI joules, nutritional/thermal calories, electrical kilowatt-hours, and British Thermal Units (BTU). Standardized under ISO 80000-5 and International Steam Table thermochemical definitions.
Because both Calorie and Joule belong to the linear energy domain, conversion between them is strictly proportional. The exact conversion factor (4.184) guarantees zero precision drift across mathematical calculations.
🎯 Common Practical Applications
Bomb Calorimetry & Combustion Chemistry
Converting chemical combustion heat measured in calories into standard SI thermodynamic joules.
Sports Nutrition & Metabolic Rate Modeling
Translating basal metabolic rate dietary intake into SI units for scientific publication.
Ecosystem Energetics & Biomass Energy
Quantifying solar energy capture and food web trophic energy transfers in ecological studies.
Reverse Conversion Option
Looking to calculate the reverse direction? Switch directly to our dedicated Joule to Calorie converter.
Calorie to Joule Conversion Table (1 to 1000)
| Calorie (cal) | Joule (J) | Joule (J) | Calorie (cal) |
|---|---|---|---|
| 1 cal | 4.184 J | 1 J | 0.239006 cal |
| 2 cal | 8.368 J | 2 J | 0.478011 cal |
| 3 cal | 12.552 J | 3 J | 0.717017 cal |
| 5 cal | 20.92 J | 5 J | 1.195029 cal |
| 10 cal | 41.84 J | 10 J | 2.390057 cal |
| 15 cal | 62.76 J | 15 J | 3.585086 cal |
| 20 cal | 83.68 J | 20 J | 4.780115 cal |
| 25 cal | 104.6 J | 25 J | 5.975143 cal |
| 50 cal | 209.2 J | 50 J | 11.950287 cal |
| 75 cal | 313.8 J | 75 J | 17.92543 cal |
| 100 cal | 418.4 J | 100 J | 23.900574 cal |
| 250 cal | 1046 J | 250 J | 59.751434 cal |
| 500 cal | 2092 J | 500 J | 119.502868 cal |
| 1000 cal | 4184 J | 1000 J | 239.005736 cal |
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Frequently Asked Questions
How many Joule in 1 Calorie?
1 Calorie (cal) equals exactly 4.184 Joule (J). 1 Joule (J) equals approximately 0.239006 Calorie (cal). Formula: cal ≈ J × 0.23900574.
How to convert Calorie to Joule?
To convert from Calorie to Joule, multiply the quantity by 4.184 (or divide by 0.239006). Mathematical formula: J = cal × 4.184.
What is an example calculation converting Calorie to Joule?
To convert 10 Calorie to Joule: multiply 10 by the conversion factor 4.184 to get exactly 41.84 Joule (J).
How to convert back from Joule to Calorie?
To convert from Joule to Calorie, multiply by the inverse factor 0.239006 (or divide by 4.184). Formula: cal = J × 0.23900574.