Seamlessly convert joules to kilowatt-hours and vice versa using Examples.com. Get rapid and accurate results by simply entering your data.

Conversion Factors:

  • Joules to Kilowatt-Hours: 1 kilowatt-hour = 3,600,000 joules
  • Kilowatt-Hours to Joules: 1 joule = 1/3,600,000 kilowatt-hours

How to Convert Joules to Kilowatt-Hours:

To convert joules to kilowatt-hours, divide the number of joules by 3,600,000.

Kilowatt-Hours = Joules/3,600,000

Example:

Convert 10,000,000 joules to kilowatt-hours.

Kilowatt-Hours = 10,000,000/3,600,000 = 2.78 kWh

How to Convert Kilowatt-Hours to Joules:

To convert kilowatt-hours to joules, multiply the number of kilowatt-hours by 3,600,000.

Joules = Kilowatt-Hours×3,600,000

Example:

Convert 5 kilowatt-hours to joules.

Joules = 5×3,600,000 = 18,000,000 J

Joule to Kilowatt-Hour Conversion Table

Joules (J)Kilowatt-Hours (kWh)
1 J2.7778e-7 kWh
2 J5.5556e-7 kWh
3 J8.3333e-7 kWh
4 J1.1111e-6 kWh
5 J1.3889e-6 kWh
6 J1.6667e-6 kWh
7 J1.9444e-6 kWh
8 J2.2222e-6 kWh
9 J2.5000e-6 kWh
10 J2.7778e-6 kWh
20 J5.5556e-6 kWh
30 J8.3333e-6 kWh
40 J1.1111e-5 kWh
50 J1.3889e-5 kWh
60 J1.6667e-5 kWh
70 J1.9444e-5 kWh
80 J2.2222e-5 kWh
90 J2.5000e-5 kWh
100 J2.7778e-5 kWh

J to kWh Conversion Chart

Kilowatt-Hour to Joule Conversion Table

Kilowatt-Hours (kWh)Joules (J)
1 kWh3.6e+6 J
2 kWh7.2e+6 J
3 kWh1.08e+7 J
4 kWh1.44e+7 J
5 kWh1.8e+7 J
6 kWh2.16e+7 J
7 kWh2.52e+7 J
8 kWh2.88e+7 J
9 kWh3.24e+7 J
10 kWh3.6e+7 J
20 kWh7.2e+7 J
30 kWh1.08e+8 J
40 kWh1.44e+8 J
50 kWh1.8e+8 J
60 kWh2.16e+8 J
70 kWh2.52e+8 J
80 kWh2.88e+8 J
90 kWh3.24e+8 J
100 kWh3.6e+8 J

kWh to J Conversion Chart

Difference Between Joule to Kilowatt-Hour

AspectJoule (J)Kilowatt-Hour (kWh)
DefinitionA unit of energy in the International System of Units (SI).A unit of energy equivalent to one kilowatt of power used for one hour.
SymbolJkWh
Conversion Factor1 Joule = 2.7778e-7 Kilowatt-Hours1 Kilowatt-Hour = 3.6 million Joules
UsageCommonly used in physics and engineering.Commonly used in electrical energy billing and consumption.
Measurement ContextMeasures energy in physical processes.Measures electrical energy used over time.
Common ApplicationUsed to quantify work, heat, and energy transfer.Used to indicate electrical energy usage, such as in homes and businesses.
ScaleSmaller unit suitable for detailed scientific calculations.Larger unit, practical for everyday energy consumption measurement.
OriginNamed after James Prescott Joule, an English physicist.Combines the units of power (kilowatts) and time (hours).

1. Solved Examples on Converting Joule to Kilowatt-Hour

Example 1:

Convert 1,800,000 joules to kilowatt-hours.

Kilowatt-Hours = 1,800,000/3,600,000 = 0.5 kWh

Example 2:

Convert 7,200,000 joules to kilowatt-hours.

Kilowatt-Hours = 7,200,000/3,600,000 = 2 kWh

Example 3:

Convert 10,800,000 joules to kilowatt-hours.

Kilowatt-Hours = 10,800,000/3,600,000 = 3 kWh

Example 4:

Convert 15,000,000 joules to kilowatt-hours.

Kilowatt-Hours = 15,000,000/3,600,000 = 4.17 kWh

Example 5:

Convert 25,200,000 joules to kilowatt-hours.

Kilowatt-Hours = 25,200,000/3,600,000 = 7 kWh

2. Solved Examples on Converting Kilowatt-Hour to Joule

Example 1:

Convert 1 kilowatt-hour to joules.

Joules = 1×3,600,000 = 3,600,000 J

Example 2:

Convert 3 kilowatt-hours to joules.

Joules = 3×3,600,000 = 10,800,000 J

Example 3:

Convert 5 kilowatt-hours to joules.

Joules = 5×3,600,000 = 18,000,000 J

Example 4:

Convert 8 kilowatt-hours to joules.

Joules = 8×3,600,000 = 28,800,000 J

Example 5:

Convert 12 kilowatt-hours to joules.

Joules = 12×3,600,000 = 43,200,000 J

Why do we need to convert joules to kilowatt-hours?

Converting joules to kilowatt-hours is useful in electrical and power applications where energy consumption over time needs to be measured, such as in calculating electricity usage for billing purposes.

Can I use an online calculator to convert joules to kilowatt-hours?

Yes, online calculators can quickly and accurately convert joules to kilowatt-hours. Simply enter the number of joules, and the calculator will provide the equivalent energy in kilowatt-hours.

How do kilowatt-hours relate to battery storage capacity?

Battery storage capacity is often measured in kilowatt-hours, indicating the amount of electrical energy the battery can store and deliver. For example, a battery rated at 10 kWh can provide 1 kilowatt of power for 10 hours.

What is the practical use of converting joules to kilowatt-hours?

Converting joules to kilowatt-hours is practical for understanding and calculating the energy consumption of household appliances, industrial machinery, and electrical devices over time, especially for energy billing and efficiency analysis.

Can I use joules and kilowatt-hours interchangeably?

While joules and kilowatt-hours both measure energy, they are not interchangeable without conversion because 1 kilowatt-hour equals 3,600,000 joules. The appropriate unit depends on the context—kilowatt-hours are commonly used in electrical energy, while joules are used in scientific and engineering contexts.