Seamlessly convert joules to kilowatt-hours and vice versa using Examples.com. Get rapid and accurate results by simply entering your data.
J to kWh
Formula: Energy in Kilowatt-hours (kWh) = Energy in Joules (J) ∕ 3.6e6
Joule :
Kilowatt-hour :
| Joules | Kilowatt-hours |
|---|---|
| 1 | 2.7777777777777776e-7 |
kWh to J
Formula: Energy in Joules (J) = Energy in Kilowatt-hours (kWh) x 3.6e6
Kilowatt-hour :
Joule :
| Kilowatt-hours | Joules |
|---|---|
| 1 | 3600000 |
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 J | 2.7778e-7 kWh |
| 2 J | 5.5556e-7 kWh |
| 3 J | 8.3333e-7 kWh |
| 4 J | 1.1111e-6 kWh |
| 5 J | 1.3889e-6 kWh |
| 6 J | 1.6667e-6 kWh |
| 7 J | 1.9444e-6 kWh |
| 8 J | 2.2222e-6 kWh |
| 9 J | 2.5000e-6 kWh |
| 10 J | 2.7778e-6 kWh |
| 20 J | 5.5556e-6 kWh |
| 30 J | 8.3333e-6 kWh |
| 40 J | 1.1111e-5 kWh |
| 50 J | 1.3889e-5 kWh |
| 60 J | 1.6667e-5 kWh |
| 70 J | 1.9444e-5 kWh |
| 80 J | 2.2222e-5 kWh |
| 90 J | 2.5000e-5 kWh |
| 100 J | 2.7778e-5 kWh |
J to kWh Conversion Chart
Kilowatt-Hour to Joule Conversion Table
| Kilowatt-Hours (kWh) | Joules (J) |
|---|---|
| 1 kWh | 3.6e+6 J |
| 2 kWh | 7.2e+6 J |
| 3 kWh | 1.08e+7 J |
| 4 kWh | 1.44e+7 J |
| 5 kWh | 1.8e+7 J |
| 6 kWh | 2.16e+7 J |
| 7 kWh | 2.52e+7 J |
| 8 kWh | 2.88e+7 J |
| 9 kWh | 3.24e+7 J |
| 10 kWh | 3.6e+7 J |
| 20 kWh | 7.2e+7 J |
| 30 kWh | 1.08e+8 J |
| 40 kWh | 1.44e+8 J |
| 50 kWh | 1.8e+8 J |
| 60 kWh | 2.16e+8 J |
| 70 kWh | 2.52e+8 J |
| 80 kWh | 2.88e+8 J |
| 90 kWh | 3.24e+8 J |
| 100 kWh | 3.6e+8 J |
kWh to J Conversion Chart
Difference Between Joule to Kilowatt-Hour
| Aspect | Joule (J) | Kilowatt-Hour (kWh) |
|---|---|---|
| Definition | A unit of energy in the International System of Units (SI). | A unit of energy equivalent to one kilowatt of power used for one hour. |
| Symbol | J | kWh |
| Conversion Factor | 1 Joule = 2.7778e-7 Kilowatt-Hours | 1 Kilowatt-Hour = 3.6 million Joules |
| Usage | Commonly used in physics and engineering. | Commonly used in electrical energy billing and consumption. |
| Measurement Context | Measures energy in physical processes. | Measures electrical energy used over time. |
| Common Application | Used to quantify work, heat, and energy transfer. | Used to indicate electrical energy usage, such as in homes and businesses. |
| Scale | Smaller unit suitable for detailed scientific calculations. | Larger unit, practical for everyday energy consumption measurement. |
| Origin | Named 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.