Convert Kilocalories to Joules
1 kcal = 4184 J
Conversion Table
| kilocalories (kcal) | joules (J) |
|---|---|
| 0.5 | 2092 |
| 1 | 4184 |
| 2 | 8368 |
| 5 | 20920 |
| 10 | 41840 |
| 25 | 104600 |
| 50 | 209200 |
| 100 | 418400 |
| 250 | 1046000 |
| 500 | 2092000 |
| 1000 | 4184000 |
How to Convert kilocalories to joules
To convert kilocalories to joules, multiply the value by the conversion factor:
For example: 10 kcal = 41840 J
About kilocalories and joules
The Conversion Formula
To convert kilocalories to joules, multiply the value by the conversion factor: 1 kcal = 4184 J. For a worked example, suppose you need to convert 25 kcal to joules: 25 × 4184 = 104600 J. To convert in the opposite direction, divide by 4184, or equivalently multiply by 0.000239006.
About kilocalories
The kilocalorie (kcal) is what we colloquially call a 'Calorie' (capital C) on food labels in the US. It equals 1,000 small chemistry calories. It represents the energy required to heat 1 kilogram of water by 1°C. Confusion between calories and Calories is one of the most common unit errors in the world! kilocalories are commonly used in US Food labels, Diet apps, Fitness trackers, and Nutrition science, Body metabolic rate.
An apple contains about 95 kilocalories (Calories).
About joules
The Joule (J) is the standard unit of energy in the International System of Units (SI). It is named after James Prescott Joule, who proved that heat is a form of energy. One Joule is the work done by a force of one Newton moving an object one meter. It is a small unit: lifting a small apple one meter takes about 1 Joule. joules are commonly used in Scientific research, Physics education, Electronics ratings, and Kinetic energy calculations, Work done.
The energy of a heartbeat is roughly 1 Joule.
When Would You Convert kilocalories to joules?
Converting between kilocalories and joules is one of the most common energy conversions. You might need this conversion when working with international specifications, following instructions written for a different measurement system, or comparing values across different standards. Having the conversion factor (1 kcal = 4184 J) memorized or bookmarked can save time in professional and everyday contexts alike.