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Kilojoules to Gigawatt-hours conversion

Kilojoules to Gigawatt-hours conversion table

Kilojoules (kJ)Gigawatt-hours (GWh)
00
12.7777777777778e-10
25.5555555555556e-10
38.3333333333333e-10
41.1111111111111e-9
51.3888888888889e-9
61.6666666666667e-9
71.9444444444444e-9
82.2222222222222e-9
92.5e-9
102.7777777777778e-9
205.5555555555556e-9
308.3333333333333e-9
401.1111111111111e-8
501.3888888888889e-8
601.6666666666667e-8
701.9444444444444e-8
802.2222222222222e-8
902.5e-8
1002.7777777777778e-8
10002.7777777777778e-7

How to convert kilojoules to gigawatt-hours?

Sure, I'd be happy to explain the conversion from kilojoules (kJ) to gigawatt-hours (GWh), as well as provide some real-world examples for various quantities of kilojoules.

Conversion from Kilojoules to Gigawatt-Hours

1 kilojoule (kJ) equals 0.00000000027778 gigawatt-hours (GWh). This is because:

1 joule (J) = 2.77778 × 10^-10 gigawatt-hours (GWh)

And since 1 kilojoule is equal to 1000 joules:

1 kJ = 1000 J

Therefore,

1 kJ = 1000 × 2.77778 × 10^-10 GWh ≈ 2.77778 × 10^-7 GWh

So, to convert 1 kilojoule to gigawatt-hours:

1 kJ=2.77778×10−7 GWh1 \text{ kJ} = 2.77778 \times 10^{-7} \text{ GWh}

Real-World Examples of Kilojoules

  1. Food Energy:

    • A slice of bread typically contains about 300 kJ (approximately 0.0000833 kWh or 8.333 × 10^-8 GWh).
    • An apple provides around 200 kJ (0.0000556 kWh or 5.556 × 10^-8 GWh).

  2. Physical Activity:

    • Running a marathon can expel around 32,000 kJ (8.888 × 10^-3 kWh or 8.888 × 10^-6 GWh).

  3. Daily Energy Use:

    • The average daily energy requirement for an adult is about 8700 kJ (2.417 kWh or 2.417 × 10^-3 GWh).

  4. Household Appliances:

    • A microwave oven typically uses about 900 kJ for heating food for 5 minutes (0.25 kWh or 2.5 × 10^-4 GWh).

  5. Industrial Energy Usage:

    • A typical home in the UK uses around 50,000 kJ of electrical energy per day (13.8889 kWh or 1.38889 × 10^-2 GWh).

Each of these real-world examples gives you an idea of how kilojoules relate to other measures of energy, helping you to conceptualize the quantities involved.

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 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 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 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

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