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Kilocalories to Gigawatt-hours conversion

Kilocalories to Gigawatt-hours conversion table

Kilocalories (kcal)Gigawatt-hours (GWh)
00
11.1622222222222e-9
22.3244444444444e-9
33.4866666666667e-9
44.6488888888889e-9
55.8111111111111e-9
66.9733333333333e-9
78.1355555555556e-9
89.2977777777778e-9
91.046e-8
101.1622222222222e-8
202.3244444444444e-8
303.4866666666667e-8
404.6488888888889e-8
505.8111111111111e-8
606.9733333333333e-8
708.1355555555556e-8
809.2977777777778e-8
901.046e-7
1001.1622222222222e-7
10000.000001162222222222

How to convert kilocalories to gigawatt-hours?

Certainly! Let's start with the conversion from kilocalories (kcal) to gigawatt-hours (GWh).

Conversion Steps

  1. Kilocalories to Joules: 1 kilocalorie (kcal) is equivalent to 4,184 joules (J).

  2. Joules to Gigajoules: 1 gigajoule (GJ) = 10910^9 joules (J).

  3. Gigajoules to Gigawatt-hours: 1 gigawatt-hour (GWh) = 3.6 gigajoules (GJ).

Let's break it down:

1 kcal ×\times 4,184 joules = 4,184 joules

Next, convert joules to gigajoules: 4,184 J÷(109)=4.184×10−6GJ\text{4,184 J} \div (10^9) = 4.184 \times 10^{-6} \text{GJ}

Finally, convert gigajoules to gigawatt-hours: 4.184×10−6GJ÷3.6=1.1622×10−6GWh4.184 \times 10^{-6} \text{GJ} \div 3.6 = 1.1622 \times 10^{-6} \text{GWh}

So, 1 kilocalorie (kcal) is approximately equal to 1.1622×10−61.1622 \times 10^{-6} gigawatt-hours (GWh).

Real-World Examples of Kilocalories

Let's look at some real-world examples of kilocalories and convert these to GWh for context:

  1. Daily Human Calorie Intake:

    • Average daily intake: ~2,000 kcal.
    • 2,000 kcal×1.1622×10−6 GWh/kcal=0.0023244 GWh2,000 \text{ kcal} \times 1.1622 \times 10^{-6} \text{ GWh/kcal} = 0.0023244 \text{ GWh}.

  2. A Single Candy Bar:

    • Approximate energy: ~250 kcal.
    • 250 kcal×1.1622×10−6 GWh/kcal=0.00029055 GWh250 \text{ kcal} \times 1.1622 \times 10^{-6} \text{ GWh/kcal} = 0.00029055 \text{ GWh}.

  3. Running a Marathon (~2,600 kcal):

    • 2,600 kcal×1.1622×10−6 GWh/kcal=0.0030217 GWh2,600 \text{ kcal} \times 1.1622 \times 10^{-6} \text{ GWh/kcal} = 0.0030217 \text{ GWh}.

  4. 100 Watts Light Bulb Running for 10 Hours:

    • Energy consumption: 100 W×10 hours=1,000 Wh100 \text{ W} \times 10 \text{ hours} = 1,000 \text{ Wh} = 1 kWh
    • 1 kWh is 1/1,000=0.001GWh1 / 1,000 = 0.001 GWh.

For further context:

  • A kilowatt-hour (kWh) is equivalent to 860,420860,420 kcal.
  • 1 GWh can power roughly 11 million 100-watt light bulbs for 10 hours.

By understanding these conversions, you can better appreciate the energy content in different forms and get a sense of energy equivalency across different units.

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 Gigawatt-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 gigawatt-hours?

A Gigawatt-hour is a unit of energy and its units, GWh, are formed with W for watt and h for hour from SI unit system combined with letter G, metric prefix, for 1,000,000,000 or 10910^9. 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 10910^9 is representing Giga prefix in GWh unit.

1GWh=109∗Pt=109∗IVt=3600∗109∗J=2.247∗1022∗109eV=8.598∗105∗109cal1 GWh = 10^9*Pt = 10^9*IVt = 3600 * 10^9*J = 2.247 * 10^{22} * 10^9 eV = 8.598*10^5 * 10^9 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