Kilocalorie to Joule
1 kcal = 4184.00 J
Convert Kilocalorie (kcal) to Joule (J) with engineering-grade precision. Instant results, formula, and reference table below.
1 Kilocalorie ≈4184 Joule
How to convert Kilocalorie to Joule (kcal to J)
Converting Kilocalories 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 kcal = 4184.00 J
Calculation Example
Let's say you want to convert 5 kcal to J:
- Input: 5 kcal
- Calculation: 5 × 4184.00
- Result: 20920.0000 J
About the Kilocalorie to Joule conversion
The conversion factor from Kilocalorie (kcal) to Joule (J) is 4184.00, meaning 1 kcal = 4184.00 J and inversely 1 J = 0.00023901 kcal. That makes the Kilocalorie 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 Kilocalorie converter.
Frequently Asked Questions
How do I convert Kilocalorie to Joule?
To convert Kilocalorie to Joule, you need to multiply the kcal value by 4184.00.
What is the formula for kcal to J?
The simple formula is: J = kcal × 4184.00.
Which is bigger: Kilocalorie or Joule?
A Kilocalorie is bigger. One Kilocalorie is equal to approx 4184.0000 Joules.
How many Kilocalories are in one Joule?
There are approximately 0.000239006 Kilocalories in one Joule.
Quick Conversion Table
| kcal | J |
|---|---|
| 1 | 4184.0000 |
| 5 | 20920.0000 |
| 10 | 41840.0000 |
| 20 | 83680.0000 |
| 50 | 209200.0000 |
| 100 | 418400.0000 |