Calories to Joules Converter
Instantly convert Calories (cal) to Joules (J). Used in physics, chemistry, and nutrition when converting calorie-based energy values to SI joules.
Quick Reference
How to Convert Calories to Joules
To convert Calories to Joules, use this formula:
J = cal × 4.184
Example: Converting 100 cal to Joules gives you 418.4 J. Just enter your own value in the converter above for an instant result.
Calories to Joules Conversion Table
Common Calories to Joules values at a glance — use this as a quick lookup reference:
| Calories (cal) | Joules (J) |
|---|---|
| 1 cal | 4.184 J |
| 5 cal | 20.92 J |
| 10 cal | 41.84 J |
| 50 cal | 209.2 J |
| 100 cal | 418.4 J |
| 250 cal | 1046 J |
| 500 cal | 2092 J |
| 1000 cal | 4184 J |
| 2000 cal | 8368 J |
| 5000 cal | 20920 J |
| 10000 cal | 41840 J |
When to Use Calories to Joules Conversion
Used in physics, chemistry, and nutrition when converting calorie-based energy values to SI joules. Here are the most common scenarios where you will need this conversion:
About Calories and Joules
One calorie equals exactly 4.184 joules. The calorie was originally defined as the amount of heat needed to raise 1 gram of water by 1°C. Scientists working with SI units need joules, making this conversion essential for physics experiments, chemical reaction calculations, and metabolic energy studies. The food calorie (kilocalorie) is 4184 joules — understanding this helps bridge nutritional and scientific energy measurements.
Related Energy Conversions
All Calories to Joules Values
Click any specific value below for a dedicated conversion page with formula, table, and nearby values: