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To convert from Kilojoule (kJ) to Kilocalorie (kcal), use the following formula:
With is the ratio between the base units calorie (cal) and Joule (J).
Let's convert 5 Kilojoule (kJ) to Kilocalorie (kcal).
Using the formula:
Therefore, 5 Kilojoule (kJ) is equal to Kilocalorie (kcal).
Here are some quick reference conversions from Kilojoule (kJ) to Kilocalorie (kcal):
| Kilojoules | Kilocalories |
|---|---|
| 0.000001 kJ | kcal |
| 0.001 kJ | kcal |
| 0.1 kJ | kcal |
| 1 kJ | kcal |
| 2 kJ | kcal |
| 3 kJ | kcal |
| 4 kJ | kcal |
| 5 kJ | kcal |
| 6 kJ | kcal |
| 7 kJ | kcal |
| 8 kJ | kcal |
| 9 kJ | kcal |
| 10 kJ | kcal |
| 20 kJ | kcal |
| 30 kJ | kcal |
| 40 kJ | kcal |
| 50 kJ | kcal |
| 100 kJ | kcal |
| 1000 kJ | kcal |
| 10000 kJ | kcal |
For all Energy converters, choose units using the From/To dropdowns above.
A kilojoule (kJ) is a unit used to measure energy.
Just like a kilometer is 1,000 meters, a kilojoule is 1,000 joules. Kilojoules are part of the International System of Units (SI), the modern form of the metric system.
They are used worldwide to measure energy in food, physics, and everyday life.
Key Takeaways:
In nutrition, kilojoules (kJ) are the international standard for measuring the energy we get from food and drinks.
You'll often see them listed alongside calories (cal) on nutrition labels, especially outside of the United States.
Understanding the relationship between them is easy. The conversion is simple: 1 calorie is about 4.2 kilojoules.
Knowing this helps you accurately track your energy intake and easily compare food products, no matter where you are in the world.
As a multiple of the joule, the kilojoule (kJ) is a fundamental unit for measuring work and energy in scientific fields like physics and chemistry.
One kilojoule (1,000 joules) is roughly the energy needed to lift a 100-kg (220-lb) object one meter off the ground.
This standardization allows scientists to make precise and consistent energy calculations in experiments and research.
Beyond food labels and science labs, kilojoules help quantify the energy we use for everyday activities and appliances.
Thinking in kilojoules offers a practical way to understand and manage your personal energy expenditure.
For example:
A kilocalorie (kcal) is a unit used to measure energy.
Just as a kilometer is 1,000 meters, one kilocalorie is equal to 1,000 small calories (cal).
It's the most common unit for discussing the energy content of food.
Have you ever noticed the word "Calories" on a food label? What you're actually seeing is a kilocalorie (kcal).
Here's the simple breakdown:
Essentially, in the world of nutrition, the terms Calorie and kilocalorie are used interchangeably.
The "small calorie" (cal) is a much smaller unit and is primarily used in science labs.
Scientifically, a kilocalorie is the amount of energy needed to heat one kilogram of water by one degree Celsius.
This precise measurement allows scientists to determine how much energy your body can get from the macronutrients in your food, such as:
When a food label says a serving has 100 Calories, it means that's the amount of energy your body can use from it.
The kilocalorie isn't just for food!
As a fundamental unit of energy, it's also used in fields like physics and chemistry to measure energy in chemical reactions and heat transfer.