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Kilocalories to Milliwatt-hours conversion

Kilocalories to Milliwatt-hours conversion table

Kilocalories (kcal)Milliwatt-hours (mWh)
00
11162.2222222222
22324.4444444444
33486.6666666667
44648.8888888889
55811.1111111111
66973.3333333333
78135.5555555556
89297.7777777778
910460
1011622.222222222
2023244.444444444
3034866.666666667
4046488.888888889
5058111.111111111
6069733.333333333
7081355.555555556
8092977.777777778
90104600
100116222.22222222
10001162222.2222222

How to convert kilocalories to milliwatt-hours?

To convert kilocalories (kcal) to milliwatt-hours (mWh), you need to understand their relationship in terms of energy. Here is the step-by-step conversion process:

1 kilocalorie (kcal) is equivalent to 4.184 kilojoules (kJ).

1 kilojoule (kJ) is equivalent to 1,000,000 millijoules (mJ).

1 joule (J) is equivalent to 2.77778 x 10^-7 watt-hours (Wh).

So, to convert 1 kilocalorie to milliwatt-hours:

  1. Convert kilocalories to kilojoules: 1 kcal=4.184 kJ1 \text{ kcal} = 4.184 \text{ kJ}

  2. Convert kilojoules to joules: 4.184 kJ×1,000=4,184 J4.184 \text{ kJ} \times 1,000 = 4,184 \text{ J}

  3. Convert joules to watt-hours: 4,184 J×2.77778×10−7=1.1622 Wh4,184 \text{ J} \times 2.77778 \times 10^{-7} = 1.1622 \text{ Wh}

  4. Convert watt-hours to milliwatt-hours: 1.1622 Wh×1,000=1,162.2 mWh1.1622 \text{ Wh} \times 1,000 = 1,162.2 \text{ mWh}

So, 1 kilocalorie is equivalent to approximately 1,162.2 milliwatt-hours.

Real-World Examples of Kilocalories

Here are some real-world examples of items measured in kilocalories:

  1. Slice of Pizza: Roughly 285 kcal. This would be equivalent to approximately 331,227 mWh.
  2. Banana: Approximately 105 kcal. This would be equivalent to around 121,031 mWh.
  3. 1 ounce (28 grams) of Ridged Potato Chips: About 155 kcal, which converts to around 178,941 mWh.
  4. 1 Pecan Pie Slice (Approx 1/6th or 145g of 9" pie): About 500 kcal, which is approximate 581,100 mWh.
  5. Strenuous Exercise (Running 1 mile): Burns about 100 kcal, translating to approximately 116,220 mWh.
  6. Cup of Black Coffee: Near 1 kcal, amounting to approximately 1,162.2 mWh.

These conversions and examples give a sense of how energy consumed (in the form of food, for instance) can be translated into energy measurements commonly used in electrical contexts.

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 Milliwatt-hours to other unit conversions.

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!

What is milliwatt-hours?

A Milliwatt-hour is a unit of energy and its units, kWh, are formed with W for watt and h for hour from SI unit system combined with letter m, metric prefix, for 0.001 or 10−310^{-3}. Its definition, in the context of electricity, is the energy of one watt power flowing for one hour.

Followings equivalent equations are identical but in different units. Please note that factor 10−310^{-3} is representing Milli prefix in mWh unit.

1mWh=10−3∗Pt=10−3∗IVt=3600∗10−3∗J=2.247∗1022∗10−3eV=8.598∗105∗10−3cal1 mWh = 10^{-3}*Pt = 10^{-3}*IVt = 3600 * 10^{-3}*J = 2.247 * 10^{22} * 10^{-3} eV = 8.598*10^5 * 10^{-3} cal

P−PowerP - Power
t−Time (in hours. Multiply by 3600 to convert to seconds)t - Time \text{ (in hours. Multiply by 3600 to convert to seconds)}
I−CurrentI - Current V−VoltsV - Volts
J−JoulesJ - Joules
eV−ElectronvolteV - Electronvolt
cal−Caloriescal - Calories

Wikipedia page for Kilowatt-hour (watt-hour redirected to kWh) UCI article on Energy Units and Conversions Ian Woofenden's explanation on difference between Watts and Watt-Hours

Complete Kilocalories conversion table

Enter # of Kilocalories
Convert 1 kcal to other unitsResult
Kilocalories to Watt-seconds (kcal to Ws)4184
Kilocalories to Watt-minutes (kcal to Wm)69.733333333333
Kilocalories to Watt-hours (kcal to Wh)1.1622222222222
Kilocalories to Milliwatt-hours (kcal to mWh)1162.2222222222
Kilocalories to Kilowatt-hours (kcal to kWh)0.001162222222222
Kilocalories to Megawatt-hours (kcal to MWh)0.000001162222222222
Kilocalories to Gigawatt-hours (kcal to GWh)1.1622222222222e-9
Kilocalories to Joules (kcal to J)4184
Kilocalories to Kilojoules (kcal to kJ)4.184
Kilocalories to Megajoules (kcal to MJ)0.004184
Kilocalories to Gigajoules (kcal to GJ)0.000004184
Kilocalories to calories (kcal to cal)1000

Energy conversions