Use this free online energy converter to change watt-hour into megajoules instantly. Type in the watt-hour value, and the equivalent megajoules is calculated for you in real time.
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Watt-hour
Megajoules
How to use this Watt-hour to Megajoules Converter 🤔
Follow these steps to convert given Watt-hour value from Watt-hour units to Megajoules units.
Enter the input Watt-hour value in the text field.
The given Watt-hour is converted to Megajoules in realtime ⌚ using the formula, and displayed under the Megajoules label.
You may copy the resulting Megajoules value using the Copy button.
Formula
To convert given energy from Watt-hour to Megajoules, use the following formula.
Megajoules = Watt-hour*3.6e-3
Calculation
Calculation will be done after you enter a valid input.
Watt-hour to Megajoules Conversion Table
The following table gives some of the most used conversions from Watt-hour to Megajoules.
Watt-hour (Wh)
Megajoules (MJ)
0.01 Wh
0.000036MJ
0.1 Wh
0.00036MJ
1 Wh
0.0036MJ
2 Wh
0.0072MJ
3 Wh
0.0108MJ
4 Wh
0.0144MJ
5 Wh
0.018MJ
6 Wh
0.0216MJ
7 Wh
0.0252MJ
8 Wh
0.0288MJ
9 Wh
0.0324MJ
10 Wh
0.036MJ
20 Wh
0.072MJ
50 Wh
0.18MJ
100 Wh
0.36MJ
1000 Wh
3.6MJ
Watt-hour
A Watt-hour (Wh) is a unit of energy that measures the amount of electrical energy consumed or generated over time. One Watt-hour is equivalent to one watt of power used or produced for one hour. This unit is commonly used to quantify energy usage in households, industries, and various devices. For instance, a 100-watt light bulb running for 10 hours consumes 1000 watt-hours, or 1 kilowatt-hour (kWh). Watt-hours are essential for understanding energy consumption, billing in electric utilities, and managing energy efficiency.
Megajoules
A Megajoule (MJ) is a unit of energy equal to 1,000,000 joules. It is commonly used to measure large quantities of energy in various scientific, engineering, and industrial contexts. One megajoule represents the amount of energy required to apply a force of one newton over a distance of one million meters, or the energy transferred when one megawatt of power is applied for one second. Megajoules are often used to quantify the energy content of fuels, the work done by large machines, and the energy used or produced in industrial processes, providing a standard measure for comparing significant energy transfers and consumption.
{
"conversion": "watt_hour-megajoules",
"x_slug": "watt_hour",
"y_slug": "megajoules",
"x": "Wh",
"y": "MJ",
"x_desc": "Watt-hour",
"y_desc": "Megajoules",
"category": "Energy",
"symbol": "m",
"formula": "x*3.6e-3",
"precision": 11,
"examples": "<div class=\"example\">\n <div class=\"example_head\"><span class=\"example_n\">1</span>\n <h3 class=\"question\">Consider that we have a light bulb that consumes 300 watt-hours (Wh) of energy over the 5 hours it was on.<br>Convert this energy consumption from watt-hours to Megajoules.</h3></div>\n <h4 class=\"answer\">Answer:</h4>\n <p><strong>Given:</strong></p>\n <p>The energy in watt-hour is:</p>\n <p class=\"step\"><span>Energy<sub>(Watt-hour)</sub></span> = 300</p>\n <p><strong>Formula:</strong></p>\n <p>The formula to convert energy from watt-hour to megajoules is:</p>\n <p class=\"formula step\"><span>Energy<sub>(Megajoules)</sub></span> = <span>Energy<sub>(Watt-hour)</sub></span> × 3.6e-3</p>\n <p><strong>Substitution:</strong></p>\n <p>Substitute given weight <strong>Energy<sub>(Watt-hour)</sub> = 300</strong> in the above formula.</p>\n <p class=\"step\"><span>Energy<sub>(Megajoules)</sub></span> = <span>300</span> × 3.6e-3</p>\n <p class=\"step\"><span>Energy<sub>(Megajoules)</sub></span> = 1.08</p>\n <p><strong>Final Answer:</strong></p>\n <p>Therefore, <strong>300 Wh</strong> is equal to <strong>1.08 MJ</strong>.</p>\n <p>The energy is <strong>1.08 MJ</strong>, in megajoules.</p>\n </div>\n <div class=\"example\">\n <div class=\"example_head\"><span class=\"example_n\">2</span>\n <h3 class=\"question\">Consider that a rechargeable battery stores 500 watt-hours (Wh) of energy.<br>Convert this stored energy from watt-hours to Megajoules.</h3></div>\n <h4 class=\"answer\">Answer:</h4>\n <p><strong>Given:</strong></p>\n <p>The energy in watt-hour is:</p>\n <p class=\"step\"><span>Energy<sub>(Watt-hour)</sub></span> = 500</p>\n <p><strong>Formula:</strong></p>\n <p>The formula to convert energy from watt-hour to megajoules is:</p>\n <p class=\"formula step\"><span>Energy<sub>(Megajoules)</sub></span> = <span>Energy<sub>(Watt-hour)</sub></span> × 3.6e-3</p>\n <p><strong>Substitution:</strong></p>\n <p>Substitute given weight <strong>Energy<sub>(Watt-hour)</sub> = 500</strong> in the above formula.</p>\n <p class=\"step\"><span>Energy<sub>(Megajoules)</sub></span> = <span>500</span> × 3.6e-3</p>\n <p class=\"step\"><span>Energy<sub>(Megajoules)</sub></span> = 1.8</p>\n <p><strong>Final Answer:</strong></p>\n <p>Therefore, <strong>500 Wh</strong> is equal to <strong>1.8 MJ</strong>.</p>\n <p>The energy is <strong>1.8 MJ</strong>, in megajoules.</p>\n </div>\n ",
"img": "<img class=\"conversion\" src=\"/images/unit/energy/watt_hour-megajoules.webp\" height=\"360\" width=\"640\" alt=\"Watt-hour to Megajoules Converter | Wh to MJ\" />",
"table1n": "<h2><span class=\"x\">Watt-hour</span> to <span class=\"y\">Megajoules</span> Conversion Table</h2><p>The following table gives some of the most used conversions from Watt-hour to Megajoules.</p><table><thead><tr><th scope=\"column\" role=\"columnheader\">Watt-hour (<span class=\"unit\">Wh</span>)</th><th scope=\"column\" role=\"columnheader\">Megajoules (<span class=\"unit\">MJ</span>)</th><tr></thead><tbody><tr><td>0.01 <span class=\"unit\">Wh</span></td><td>0<span>.000036</span> <span class=\"unit\">MJ</span></td></tr><tr><td>0.1 <span class=\"unit\">Wh</span></td><td>0<span>.00036</span> <span class=\"unit\">MJ</span></td></tr><tr><td>1 <span class=\"unit\">Wh</span></td><td>0<span>.0036</span> <span class=\"unit\">MJ</span></td></tr><tr><td>2 <span class=\"unit\">Wh</span></td><td>0<span>.0072</span> <span class=\"unit\">MJ</span></td></tr><tr><td>3 <span class=\"unit\">Wh</span></td><td>0<span>.0108</span> <span class=\"unit\">MJ</span></td></tr><tr><td>4 <span class=\"unit\">Wh</span></td><td>0<span>.0144</span> <span class=\"unit\">MJ</span></td></tr><tr><td>5 <span class=\"unit\">Wh</span></td><td>0<span>.018</span> <span class=\"unit\">MJ</span></td></tr><tr><td>6 <span class=\"unit\">Wh</span></td><td>0<span>.0216</span> <span class=\"unit\">MJ</span></td></tr><tr><td>7 <span class=\"unit\">Wh</span></td><td>0<span>.0252</span> <span class=\"unit\">MJ</span></td></tr><tr><td>8 <span class=\"unit\">Wh</span></td><td>0<span>.0288</span> <span class=\"unit\">MJ</span></td></tr><tr><td>9 <span class=\"unit\">Wh</span></td><td>0<span>.0324</span> <span class=\"unit\">MJ</span></td></tr><tr><td>10 <span class=\"unit\">Wh</span></td><td>0<span>.036</span> <span class=\"unit\">MJ</span></td></tr><tr><td>20 <span class=\"unit\">Wh</span></td><td>0<span>.072</span> <span class=\"unit\">MJ</span></td></tr><tr><td>50 <span class=\"unit\">Wh</span></td><td>0<span>.18</span> <span class=\"unit\">MJ</span></td></tr><tr><td>100 <span class=\"unit\">Wh</span></td><td>0<span>.36</span> <span class=\"unit\">MJ</span></td></tr><tr><td>1000 <span class=\"unit\">Wh</span></td><td>3<span>.6</span> <span class=\"unit\">MJ</span></td></tr></table>",
"units": [
[
"watt_hour",
"Watt-hour",
"Wh"
],
[
"kilowatt_hour",
"Kilowatt-hour",
"kWh"
],
[
"megawatt_hour",
"Megawatt-hour",
"MWh"
],
[
"btu",
"British Thermal Unit (BTU)",
"BTU"
],
[
"kilobtu",
"Kilo BTU",
"kBTU"
],
[
"joules",
"Joules",
"J"
],
[
"kilojoules",
"Kilojoules",
"kJ"
],
[
"megajoules",
"Megajoules",
"MJ"
],
[
"gigajoules",
"Gigajoules",
"GJ"
]
],
"x_long_desc": "A Watt-hour (Wh) is a unit of energy that measures the amount of electrical energy consumed or generated over time. One Watt-hour is equivalent to one watt of power used or produced for one hour. This unit is commonly used to quantify energy usage in households, industries, and various devices. For instance, a 100-watt light bulb running for 10 hours consumes 1000 watt-hours, or 1 kilowatt-hour (kWh). Watt-hours are essential for understanding energy consumption, billing in electric utilities, and managing energy efficiency.",
"y_long_desc": "A Megajoule (MJ) is a unit of energy equal to 1,000,000 joules. It is commonly used to measure large quantities of energy in various scientific, engineering, and industrial contexts. One megajoule represents the amount of energy required to apply a force of one newton over a distance of one million meters, or the energy transferred when one megawatt of power is applied for one second. Megajoules are often used to quantify the energy content of fuels, the work done by large machines, and the energy used or produced in industrial processes, providing a standard measure for comparing significant energy transfers and consumption."
}
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