Calorie to Joule
1 cal = 4.184 J
Convert Calorie (cal) to Joule (J) with engineering-grade precision. Instant results, formula, and reference table below.
1 Calorie ≈4.184 Joule
How to convert Calorie to Joule (cal to J)
Converting Calories to Joules is critical for developers working with international data standards or scientific applications. This tool performs the calculation entirely on your client (browser) using JavaScript/WASM, ensuring zero latency and maximum privacy.
The Formula
1 cal = 4.18400 J
Calculation Example
Let's say you want to convert 5 cal to J:
- Input: 5 cal
- Calculation: 5 × 4.18400
- Result: 20.9200 J
About the Calorie to Joule conversion
The conversion factor from Calorie (cal) to Joule (J) is 4.184, meaning 1 cal = 4.184 J and inversely 1 J = 0.23901 cal. That makes the Calorie the larger of the two units in the energy category, where the SI base unit is the joule. Every ratio here is derived from the SI/international definition rather than a rounded approximation, so results are stable across repeated conversions.
Need the reverse? Use the Joule to Calorie converter.
Frequently Asked Questions
How do I convert Calorie to Joule?
To convert Calorie to Joule, you need to multiply the cal value by 4.18400.
What is the formula for cal to J?
The simple formula is: J = cal × 4.18400.
Which is bigger: Calorie or Joule?
A Calorie is bigger. One Calorie is equal to approx 4.1840 Joules.
How many Calories are in one Joule?
There are approximately 0.239006 Calories in one Joule.
Quick Conversion Table
| cal | J |
|---|---|
| 1 | 4.1840 |
| 5 | 20.9200 |
| 10 | 41.8400 |
| 20 | 83.6800 |
| 50 | 209.2000 |
| 100 | 418.4000 |