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Kilojoules to Kilocalories conversion

Kilojoules to Kilocalories conversion table

Kilojoules (kJ)Kilocalories (kcal)
00
10.2390057361377
20.4780114722753
30.717017208413
40.9560229445507
51.1950286806883
61.434034416826
71.6730401529637
81.9120458891013
92.151051625239
102.3900573613767
204.7801147227533
307.17017208413
409.5602294455067
5011.950286806883
6014.34034416826
7016.730401529637
8019.120458891013
9021.51051625239
10023.900573613767
1000239.00573613767

How to convert kilojoules to kilocalories?

Sure! 1 kilojoule is a unit of energy measurement that is often used in various scientific contexts as well as in everyday life, particularly when referring to food energy. To convert kilojoules to kilocalories, you need to use the conversion factor.

1 kilojoule is equivalent to approximately 0.239 kilocalories.

So, to convert 1 kilojoule to kilocalories:

1 kJ×0.239 kcal/kJ=0.239 kcal1 \text{ kJ} \times 0.239 \text{ kcal/kJ} = 0.239 \text{ kcal}

Real World Examples:

Here are some real-world examples for different quantities of kilojoules:

  1. 5 kJ: 5 kJ×0.239 kcal/kJ=1.195 kcal5 \text{ kJ} \times 0.239 \text{ kcal/kJ} = 1.195 \text{ kcal} Equivalent: The energy needed to lift a small apple (about 100 grams) 1 meter vertically.

  2. 100 kJ: 100 kJ×0.239 kcal/kJ=23.9 kcal100 \text{ kJ} \times 0.239 \text{ kcal/kJ} = 23.9 \text{ kcal} Equivalent: The energy in a small snack, such as one small biscuit.

  3. 2000 kJ: 2000 kJ×0.239 kcal/kJ=478 kcal2000 \text{ kJ} \times 0.239 \text{ kcal/kJ} = 478 \text{ kcal} Equivalent: The approximate energy content of a moderate-to-large meal, like a grilled chicken sandwich with fries.

  4. 10,000 kJ: 10,000 kJ×0.239 kcal/kJ=2390 kcal10,000 \text{ kJ} \times 0.239 \text{ kcal/kJ} = 2390 \text{ kcal} Equivalent: Roughly the total daily energy expenditure for an average adult.

  5. 40,000 kJ: 40,000 kJ×0.239 kcal/kJ=9560 kcal40,000 \text{ kJ} \times 0.239 \text{ kcal/kJ} = 9560 \text{ kcal} Equivalent: The energy consumed by an extreme endurance athlete, such as a triathlete, during a full day of intense training.

These examples illustrate kilojoules in contexts ranging from the daily energy requirements of an average person to the energy content of specific activities or foods.

See below section for step by step unit conversion with formulas and explanations. Please refer to the table below for a list of all the Kilocalories to other unit conversions.

What is kilojoules?

Kilojoules (kJ) are a unit of energy, specifically a measure of the amount of energy required to raise the temperature of 1 kilogram of water by 1 degree Celsius.

In other words, it's a way to quantify the amount of energy that something contains or releases. Kilojoules are commonly used in science, technology, and everyday life to express the energy content of various things, such as:

  • Foods: The energy content of foods is often listed in kilojoules (kJ) on nutrition labels.
  • Electrical appliances: The power consumption of devices like refrigerators or televisions is sometimes expressed in kilowatts (kW), which can be converted to kilojoules per second.
  • Chemical reactions: In chemistry, kilojoules are used to express the energy released or absorbed during chemical reactions.

To put it into perspective:

  • A typical snack bar might have around 400-600 kJ of energy content
  • A standard household light bulb uses about 60 W (which is equivalent to approximately 360 kJ per hour)
  • The kinetic energy of a human running at a moderate pace is around 500-700 kJ per minute

So, kilojoules are simply a way to measure and express the amount of energy in various forms.

What is kilocalories?

Kilocalories (kcal) are a unit of energy that measures the amount of heat or energy required to raise the temperature of 1 kilogram of water by 1 degree Celsius. In other words, it's a measure of how much energy is needed to change the state of a substance (in this case, water).

In nutrition and food science, kilocalories are used to express the energy content of foods and drinks. One kilocalorie is equal to 1000 calories (not to be confused with "Calories" which is capitalized and refers to the unit of energy specifically related to the human body). The term "kilocalorie" is often shortened to simply "calorie", but technically, it's a measure of the energy content of foods and drinks.

Here are some examples of how kilocalories are used in everyday life:

  1. Food labels: When checking nutrition labels on packaged foods, you'll see the energy content listed in kilocalories (kcal).
  2. Caloric intake: The number of kilocalories an individual consumes or burns is a measure of their caloric balance.
  3. Physical activity: The energy expended during exercise or physical activity is also measured in kilocalories.

To give you an idea of the scale, here are some approximate kilocalorie values for common foods and drinks:

  • Apple (1 medium): 95 kcal
  • Banana (1 medium): 105 kcal
  • Cup of coffee: 0-2 kcal
  • Glass of water: 0 kcal

I hope that helps you understand what kilocalories are!

Complete Kilojoules conversion table

Enter # of Kilojoules
Convert 1 kJ to other unitsResult
Kilojoules to Watt-seconds (kJ to Ws)1000
Kilojoules to Watt-minutes (kJ to Wm)16.666666666667
Kilojoules to Watt-hours (kJ to Wh)0.2777777777778
Kilojoules to Milliwatt-hours (kJ to mWh)277.77777777778
Kilojoules to Kilowatt-hours (kJ to kWh)0.0002777777777778
Kilojoules to Megawatt-hours (kJ to MWh)2.7777777777778e-7
Kilojoules to Gigawatt-hours (kJ to GWh)2.7777777777778e-10
Kilojoules to Joules (kJ to J)1000
Kilojoules to Megajoules (kJ to MJ)0.001
Kilojoules to Gigajoules (kJ to GJ)0.000001
Kilojoules to calories (kJ to cal)239.00573613767
Kilojoules to Kilocalories (kJ to kcal)0.2390057361377

Energy conversions