Easily change kilojoules to watt-hours and vice versa at Examples.com. Just input your numbers for a fast and precise conversion.
KJ to Wh
Formula: Energy in Watt Hours (Wh) = Energy in Kilojoules (kJ) ∕ 3.6
Kilojoule :
Watt Hour :
| Kilojoules | Watt Hours |
|---|---|
| 1 | 0.2777777777777778 |
Wh to KJ
Formula: Energy in Kilojoules (kJ) = Energy in Watt Hours (Wh) x 3.6
Watt Hour :
Kilojoule :
| Watt Hours | Kilojoules |
|---|---|
| 1 | 3.6 |
Energy Converters to Kilojoule
Energy Converters to Watt hour
Conversion Factors:
- Kilojoules to Watt-hours: 1 kilojoule = 0.27778 watt-hours
- Watt-hours to Kilojoules: 1 watt-hour = 3.6 kilojoules
How to Convert Kilojoules to Watt-hours:
To convert kilojoules to watt-hours, divide the number of kilojoules by 3.6.
Watt-hours=Kilojoules/3.6
Example: Convert 500 kilojoules to watt-hours.
Watt-hours=5003.6=138.89 watt-hour
How to Convert Watt-hours to Kilojoules:
To convert watt-hours to kilojoules, multiply the number of watt-hours by 3.6.
Kilojoules=Watt-hours×3.6
Example: Convert 200 watt-hours to kilojoules.
Kilojoules=200×3.6=720 kilojoules
Kilojoules to Watt-hours Conversion Table
| Kilojoules (kJ) | Watt-hours (Wh) |
|---|---|
| 1 kJ | 0.27778 Wh |
| 2 kJ | 0.55556 Wh |
| 3 kJ | 0.83333 Wh |
| 4 kJ | 1.11111 Wh |
| 5 kJ | 1.38889 Wh |
| 6 kJ | 1.66667 Wh |
| 7 kJ | 1.94444 Wh |
| 8 kJ | 2.22222 Wh |
| 9 kJ | 2.50000 Wh |
| 10 kJ | 2.77778 Wh |
| 20 kJ | 5.55556 Wh |
| 30 kJ | 8.33333 Wh |
| 40 kJ | 11.11111 Wh |
| 50 kJ | 13.88889 Wh |
| 60 kJ | 16.66667 Wh |
| 70 kJ | 19.44444 Wh |
| 80 kJ | 22.22222 Wh |
| 90 kJ | 25.00000 Wh |
| 100 kJ | 27.77778 Wh |
Watt-hours to Kilojoules Conversion Table
| Watt-hours (Wh) | Kilojoules (kJ) |
|---|---|
| 1 Wh | 3.6 kJ |
| 2 Wh | 7.2 kJ |
| 3 Wh | 10.8 kJ |
| 4 Wh | 14.4 kJ |
| 5 Wh | 18.0 kJ |
| 6 Wh | 21.6 kJ |
| 7 Wh | 25.2 kJ |
| 8 Wh | 28.8 kJ |
| 9 Wh | 32.4 kJ |
| 10 Wh | 36.0 kJ |
| 20 Wh | 72.0 kJ |
| 30 Wh | 108.0 kJ |
| 40 Wh | 144.0 kJ |
| 50 Wh | 180.0 kJ |
| 60 Wh | 216.0 kJ |
| 70 Wh | 252.0 kJ |
| 80 Wh | 288.0 kJ |
| 90 Wh | 324.0 kJ |
| 100 Wh | 360.0 kJ |
Difference Between Kilojoules to Watt-hours
| Aspect | Kilojoules (kJ) | Watt-hours (Wh) |
|---|---|---|
| Definition | Kilojoule is a unit of energy in the International System of Units (SI). | Watt-hour is a unit of energy commonly used in electrical applications. |
| Symbol | kJ | Wh |
| Usage | Used to measure energy in food, chemistry, and physics. | Used to measure electrical energy consumption. |
| Conversion Factor | 1 kJ = 0.27778 Wh | 1 Wh = 3.6 kJ |
| Common Context | Often used in scientific contexts and nutrition labels. | Commonly used in electricity billing and power consumption. |
| Larger Units | Megajoules (MJ), Gigajoules (GJ) | Kilowatt-hours (kWh), Megawatt-hours (MWh) |
| Calculation | Energy in joules divided by 1,000 to get kJ | Energy in watts multiplied by hours to get Wh |
| Practical Example | The energy content of food is often measured in kilojoules. | Household electricity consumption is measured in watt-hours or kilowatt-hours. |
1. Solved Examples on Converting Kilojoules to Watt-hours
Example 1: Convert 10 kilojoules to watt-hours.
Watt-hours=10 kJ/3.6
Watt-hours=2.78 Wh
Example 2: Convert 20 kilojoules to watt-hours.
Watt-hours=20 kJ/3.6
Watt-hours=5.56 Wh
Example 3: Convert 30 kilojoules to watt-hours.
Watt-hours=30 kJ/3.6
Watt-hours=8.33 Wh
Example 4: Convert 40 kilojoules to watt-hours.
Watt-hours=40 kJ/3.6
Watt-hours=11.11 Wh
Example 5: Convert 50 kilojoules to watt-hours.
Watt-hours=50 kJ/3.6
Watt-hours=13.89 Wh
2. Solved Examples on Converting Watt-hours to Kilojoules
Example 1: Convert 10 watt-hours to kilojoules.
Kilojoules=10 Wh×3.6
Kilojoules=36 kJ
Example 2: Convert 20 watt-hours to kilojoules.
Kilojoules=20 Wh×3.6
Kilojoules=72 kJ
Example 3: Convert 30 watt-hours to kilojoules.
Kilojoules=30 Wh×3.6
Kilojoules=108 kJ
Example 4: Convert 40 watt-hours to kilojoules.
Kilojoules=40 Wh×3.6
Kilojoules=144 kJ
Example 5: Convert 50 watt-hours to kilojoules.
Kilojoules=50 Wh×3.6
Kilojoules=180 kJ
Why is it useful to convert kilojoules to watt-hours?
Converting kilojoules to watt-hours is useful in various contexts, such as comparing energy consumption of electrical devices, calculating energy expenditure, and understanding food energy content in terms of electrical energy.
Are kilojoules and watt-hours used internationally?
Yes, kilojoules and watt-hours are standard units of energy used globally, recognized by the International System of Units (SI).
Can I use an online calculator to convert kilojoules to watt-hours?
Yes, there are many online calculators available that can easily convert kilojoules to watt-hours and vice versa. Simply enter the value in kilojoules, and the calculator will provide the equivalent watt-hours.
Are there larger units than kilojoules and watt-hours?
Yes, larger units than kilojoules include megajoules (MJ) and gigajoules (GJ). Larger units than watt-hours include kilowatt-hours (kWh) and megawatt-hours (MWh).
Is the conversion factor between kilojoules and watt-hours constant?
Yes, the conversion factor between kilojoules and watt-hours is constant. 1 kilojoule is always equal to 0.27778 watt-hours.