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Milliwatt-hours to Kilocalories conversion

Milliwatt-hours to Kilocalories conversion table

Milliwatt-hours (mWh)Kilocalories (kcal)
00
10.0008604206500956
20.001720841300191
30.002581261950287
40.003441682600382
50.004302103250478
60.005162523900574
70.006022944550669
80.006883365200765
90.00774378585086
100.008604206500956
200.01720841300191
300.02581261950287
400.03441682600382
500.04302103250478
600.05162523900574
700.06022944550669
800.06883365200765
900.0774378585086
1000.08604206500956
10000.8604206500956

How to convert milliwatt-hours to kilocalories?

Converting milliwatt-hours (mWh) to kilocalories (kcal) involves understanding the relationship between different units of energy. Here's how you can perform the conversion:

  1. Convert milliwatt-hours to watt-hours: 1 mWh=0.001 Wh 1 \text{ mWh} = 0.001 \text{ Wh}

  2. Convert watt-hours to joules: 1 Wh=3600 J(since 1 watt = 1 joule/second and there are 3600 seconds in an hour) 1 \text{ Wh} = 3600 \text{ J} \quad \text{(since 1 watt = 1 joule/second and there are 3600 seconds in an hour)} So, 0.001 Wh=0.001×3600 J=3.6 J 0.001 \text{ Wh} = 0.001 \times 3600 \text{ J} = 3.6 \text{ J}

  3. Convert joules to kilocalories: 1 kcal=4184 J 1 \text{ kcal} = 4184 \text{ J} So, 3.6 J÷4184 J/kcal≈0.00086 kcal 3.6 \text{ J} \div 4184 \text{ J/kcal} \approx 0.00086 \text{ kcal}

Therefore, 1 milliwatt-hour is approximately 0.000860.00086 kilocalories.

Real-world Examples of Milliwatt-hours

  1. Smartphones (Idle Mode):

    • A smartphone in idle mode might consume around 50 milliwatts. If it stays idle for 1 hour, it would consume: 50 mW×1 hour=50 mWh 50 \text{ mW} \times 1 \text{ hour} = 50 \text{ mWh} Which is approximately 50×0.00086=0.04350 \times 0.00086 = 0.043 kilocalories.

  2. LED Indicators:

    • An LED indicator light might consume about 10 milliwatts. If left on for 24 hours, the energy consumption would be: 10 mW×24 hours=240 mWh 10 \text{ mW} \times 24 \text{ hours} = 240 \text{ mWh} Which is approximately 240×0.00086=0.206240 \times 0.00086 = 0.206 kilocalories.

  3. Digital Watches:

    • A digital watch may consume roughly 1 milliwatt. Over the course of 30 days (720 hours), the energy consumption would be: 1 mW×720 hours=720 mWh 1 \text{ mW} \times 720 \text{ hours} = 720 \text{ mWh} Which is approximately 720×0.00086=0.619720 \times 0.00086 = 0.619 kilocalories.

Understanding these conversions and examples can give you a grasp of how small quantities of energy in mWh translate to kilocalories, which are commonly used to denote energy in food.

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 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

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 Milliwatt-hours conversion table

Enter # of Milliwatt-hours
Convert 1 mWh to other unitsResult
Milliwatt-hours to Watt-seconds (mWh to Ws)3.6
Milliwatt-hours to Watt-minutes (mWh to Wm)0.06
Milliwatt-hours to Watt-hours (mWh to Wh)0.001
Milliwatt-hours to Kilowatt-hours (mWh to kWh)0.000001
Milliwatt-hours to Megawatt-hours (mWh to MWh)1e-9
Milliwatt-hours to Gigawatt-hours (mWh to GWh)1e-12
Milliwatt-hours to Joules (mWh to J)3.6
Milliwatt-hours to Kilojoules (mWh to kJ)0.0036
Milliwatt-hours to Megajoules (mWh to MJ)0.0000036
Milliwatt-hours to Gigajoules (mWh to GJ)3.6e-9
Milliwatt-hours to calories (mWh to cal)0.8604206500956
Milliwatt-hours to Kilocalories (mWh to kcal)0.0008604206500956

Energy conversions