Accurately convert joules to watt-hours and vice versa with Examples.com. Experience fast conversions by entering your data.
J to Wh
Formula: Energy in Watt-hours (Wh) = Energy in Joules (J) ∕ 3600
Joule :
Watt-hour :
| Joules | Watt-hours |
|---|---|
| 1 | 0.0002777777777777778 |
Wh to J
Formula: Energy in Joules (J) = Energy in Watt-hours (Wh) x 3600
Watt-hour :
Joule :
| Watt-hours | Joules |
|---|---|
| 1 | 3600 |
Conversion Factors:
- Joules to Watt-hours: 1 watt-hour = 3600 joules
- Watt-hours to Joules: 1 joule = 1/3600 watt-hours
How to Convert Joules to Watt-hours:
To convert joules to watt-hours, divide the number of joules by 3600.
Watt-hours = Joules/3600
Example:
Convert 7200 joules to watt-hours.
Watt-hours = 7200/3600 = 2 Wh
How to Convert Watt-hours to Joules:
To convert watt-hours to joules, multiply the number of watt-hours by 3600.
Joules = Watt-hours×3600
Example:
Convert 5 watt-hours to joules.
Joules = 5×3600 = 18000 J
Joule to Watt-hour Conversion Table
| Joules (J) | Watt-hours (Wh) |
|---|---|
| 1 J | 0.000278 Wh |
| 2 J | 0.000556 Wh |
| 3 J | 0.000833 Wh |
| 4 J | 0.001111 Wh |
| 5 J | 0.001389 Wh |
| 6 J | 0.001667 Wh |
| 7 J | 0.001944 Wh |
| 8 J | 0.002222 Wh |
| 9 J | 0.002500 Wh |
| 10 J | 0.002778 Wh |
| 20 J | 0.005556 Wh |
| 30 J | 0.008333 Wh |
| 40 J | 0.011111 Wh |
| 50 J | 0.013889 Wh |
| 60 J | 0.016667 Wh |
| 70 J | 0.019444 Wh |
| 80 J | 0.022222 Wh |
| 90 J | 0.025000 Wh |
| 100 J | 0.027778 Wh |
J to Wh Conversion Chart
Watt-hour to Joule Conversion Table
| Watt-hours (Wh) | Joules (J) |
|---|---|
| 1 Wh | 3600 J |
| 2 Wh | 7200 J |
| 3 Wh | 10800 J |
| 4 Wh | 14400 J |
| 5 Wh | 18000 J |
| 6 Wh | 21600 J |
| 7 Wh | 25200 J |
| 8 Wh | 28800 J |
| 9 Wh | 32400 J |
| 10 Wh | 36000 J |
| 20 Wh | 72000 J |
| 30 Wh | 108000 J |
| 40 Wh | 144000 J |
| 50 Wh | 180000 J |
| 60 Wh | 216000 J |
| 70 Wh | 252000 J |
| 80 Wh | 288000 J |
| 90 Wh | 324000 J |
| 100 Wh | 360000 J |
Wh to J Conversion Chart
Difference Between Joule to Watt-hour
| Aspect | Joule (J) | Watt-hour (Wh) |
|---|---|---|
| Definition | A unit of energy in the International System of Units (SI). | A unit of energy equivalent to one watt of power used for one hour. |
| Symbol | J | Wh |
| Conversion Factor | 1 Joule = 0.000278 Watt-hours | 1 Watt-hour = 3600 Joules |
| Usage | Commonly used in physics and engineering. | Commonly used in electrical energy and power consumption. |
| Measurement Context | Measures energy in physical processes. | Measures energy used or produced over time. |
| Common Application | Used to quantify work, heat, and energy transfer. | Used to indicate electrical energy usage, such as in batteries and electricity bills. |
| Scale | Smaller unit suitable for detailed scientific calculations. | Larger unit, more practical for everyday energy consumption measurement. |
| Origin | Named after James Prescott Joule, an English physicist. | Derived from the watt, a unit named after James Watt, and combined with the time unit hour. |
1. Solved Examples on Converting Joule to Watt-hour
Example 1:
Convert 1800 joules to watt-hours.
Watt-hours = 1800/3600 = 0.5 Wh
Example 2:
Convert 7200 joules to watt-hours.
Watt-hours = 7200/3600 = 2 Wh
Example 3:
Convert 5400 joules to watt-hours.
Watt-hours = 5400/3600 = 1.5 Wh
Example 4:
Convert 9000 joules to watt-hours.
Watt-hours = 9000/3600 = 2.5 Wh
Example 5:
Convert 10800 joules to watt-hours.
Watt-hours = 10800/3600 = 3 Wh
2. Solved Examples on Converting Watt-hours to Joules
Example 1:
Convert 1 watt-hour to joules.
Joules = 1×3600 = 3600 J
Example 2:
Convert 3 watt-hours to joules.
Joules = 3×3600 = 10800 J
Example 3:
Convert 5 watt-hours to joules.
Joules = 5×3600 = 18000 J
Example 4:
Convert 7 watt-hours to joules.
Joules = 7×3600 = 25200 J
Example 5:
Convert 10 watt-hours to joules.
Joules = 10×3600 = 36000 J
How can I use joule to watt-hour conversions in real life?
Joule to watt-hour conversions are commonly used in calculating electricity usage, such as determining how much energy an electrical appliance consumes over time.
What tools can I use to convert joules to watt-hours?
There are many tools available for converting joules to watt-hours, including online calculators, mobile apps, and conversion charts.
How can I ensure accurate conversions from joules to watt-hours?
To ensure accuracy, use precise measurements and reliable tools or formulas. Double-check calculations to avoid errors, especially when dealing with large quantities of energy.
Can I use joules and watt-hours interchangeably?
While joules and watt-hours both measure energy, they are not interchangeable without conversion because 1 watt-hour equals 3600 joules. The appropriate unit depends on the context—watt-hours are commonly used in electrical energy, while joules are used in scientific and engineering contexts.
Why do we need to convert joules to watt-hours?
Converting joules to watt-hours is useful in electrical and power applications where energy consumption over time needs to be measured, such as in calculating electricity usage.
How does converting joules to watt-hours assist in scientific research?
In scientific research, converting joules to watt-hours can help in standardizing measurements and comparing energy usage across different experiments and applications, especially in fields like physics and engineering.