How many joules are in one kilocalorie?
One kilocalorie equals 4184 joules.
Convert Kilocalorie (kcal) to Joule (J) instantly.
Calculation
value × 4184
| Quick Conversion | Converted |
|---|---|
| 1 kcal | 4,184 J |
| 5 kcal | 20,920 J |
| 10 kcal | 41,840 J |
| 100 kcal | 418,400 J |
| 1,000 kcal | 4,184,000 J |
A kilocalorie is an energy unit equal to 1000 small calories or 4184 joules.
Kilocalories became widely used in nutrition because they provide a practical scale for food energy.
kcal is used in food labels, diet tracking, exercise estimates, meal planning, and larger thermal-energy references.
A joule is the SI unit of energy, work, and heat.
The joule is named after James Prescott Joule and became the standard SI unit for energy transfer.
Joules are used in physics, engineering, chemistry, electricity, mechanics, heat transfer, and scientific reporting.
Mathematically, joule (J) = kilocalorie (kcal) converted with the formula below.
1 kcal = 4,184 J
1 J = 0.000239 kcal
Formula: value × 4184
Example: 15 kcal = 62,760 J
Precision note: Use 1 kcal = 4184 J. Nutrition values are often rounded before conversion, so converted joule totals should not imply more precision than the source provides.
1 kcal = 4,184 J
1 J = 0.000239 kcal
| Kilocalorie [kcal] | Joule [J] |
|---|---|
| 0.01 kcal | 41.84 J |
| 0.1 kcal | 418.4 J |
| 1 kcal | 4,184 J |
| 2 kcal | 8,368 J |
| 5 kcal | 20,920 J |
| 10 kcal | 41,840 J |
| 20 kcal | 83,680 J |
| 50 kcal | 209,200 J |
| 100 kcal | 418,400 J |
One kilocalorie equals 4184 joules.
Yes in common nutrition use. One food Calorie is one kilocalorie.
250 kcal equals 1,046,000 J.