How many kilojoules are in one small calorie?
One small calorie equals 0.004184 kilojoules.
Convert Calorie (cal) to Kilojoule (kJ) instantly.
Calculation
value × 0.004184
| Quick Conversion | Converted |
|---|---|
| 1 cal | 0.004184 kJ |
| 5 cal | 0.02092 kJ |
| 10 cal | 0.04184 kJ |
| 100 cal | 0.4184 kJ |
| 1,000 cal | 4.184 kJ |
A small calorie is a heat-energy unit equal to 4.184 joules.
Calories were widely used for heat measurement before SI joules and kilojoules became standard in scientific reporting.
Small calories are used in chemistry examples, thermodynamics teaching, older references, and detailed heat calculations.
A kilojoule is an SI energy unit equal to 1000 joules.
Kilojoules became common as a readable SI scale for energy values larger than a few joules.
kJ is used in nutrition labeling, physics, heat transfer, mechanical work, engineering notes, and scientific summaries.
Mathematically, kilojoule (kJ) = calorie (cal) converted with the formula below.
1 cal = 0.004184 kJ
1 kJ = 239.005736 cal
Formula: value × 0.004184
Example: 15 cal = 0.06276 kJ
Precision note: Use 1 cal = 0.004184 kJ. Confirm that the source uses small calories, not kilocalories or nutrition Calories.
1 cal = 0.004184 kJ
1 kJ = 239.005736 cal
| Calorie [cal] | Kilojoule [kJ] |
|---|---|
| 0.01 cal | 0.000042 kJ |
| 0.1 cal | 0.000418 kJ |
| 1 cal | 0.004184 kJ |
| 2 cal | 0.008368 kJ |
| 5 cal | 0.02092 kJ |
| 10 cal | 0.04184 kJ |
| 20 cal | 0.08368 kJ |
| 50 cal | 0.2092 kJ |
| 100 cal | 0.4184 kJ |
One small calorie equals 0.004184 kilojoules.
1000 small calories equals 4.184 kJ.
No. A food Calorie usually means a kilocalorie, which is 1000 small calories.