Converter megajoules to kilowatt hours
Convert megajoules instantly to kilowatt hours with our free online tool. Ideal for gas bills, heating quotes and energy comparisons. Get accurate results from MJ to kWh.
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Megajoules
Kilowatt Hours
Conversion formula MJ to kWh
To convert megajoules to kilowatt hours, divide the MJ value by 3,6 or multiply it by 0,277778. One megajoule equals 1.000.000 joule, while one kilowattuur equals 3.600.000 joule, so the exact ratio is: 1 MJ = 1/3,6 kWh.
Megajoules en Kilowatt Hours uitgelegd
Megajoules (mj)
The megajoule (MJ) is one million joules, the everyday order of magnitude of the SI energy unit. A household gas heater can use about 200 MJ per day, a gallon of petrol contains roughly 120 MJ, and a sprinting cyclist delivers about 1 MJ per minute at peak effort. Gas suppliers express the energy content of natural gas in MJ per cubic metre, which makes the megajoule the working unit of the gas sector in countries with the metric system.
Waar het wordt gebruikt: Dominant on gas bills in Australia and New Zealand, in outputs of boilers and burners, in fuel energy tables, and in food regulations that use the related kilojoule.
Oorsprong: A direct metric multiple of the joule; Australian and New Zealand gas companies switched to MJ settlement during the metrication, replacing the therm and the rates per cubic foot from the imperial tradition.
Kilowatt Hours (kwh)
The kilowatt hour (kWh) is the energy of one kilowatt of power — one thousand watts — maintained for one hour, equal to 3,6 MJ or 3.600.000 joule. It is the unit that electricity meters count and energy suppliers settle with: an average American home uses about 30 kWh per day, an EV battery holds 40 to 100 kWh, and a desktop computer that runs all day draws roughly 5 to 8 kWh.
Waar het wordt gebruikt: Universal for electricity billing, specifications of EVs and home batteries, metering of solar generation, and energy labels of appliances.
Oorsprong: Created in the 1880s by the first electricity companies as a billable combination of power and time; although not an SI unit, it is permitted almost everywhere for trade.
Conversion table megajoules to kilowatt hours
| Megajoules (mj) | Kilowatt Hours (kwh) |
|---|---|
| 1 mj | 0.2777777778 kwh |
| 2 mj | 0.5555555556 kwh |
| 5 mj | 1.3888888889 kwh |
| 10 mj | 2.7777777778 kwh |
| 20 mj | 5.5555555556 kwh |
| 50 mj | 13.8888888889 kwh |
| 100 mj | 27.7777777778 kwh |
| 150 mj | 41.6666666667 kwh |
| 200 mj | 55.5555555556 kwh |
| 250 mj | 69.4444444444 kwh |
| 400 mj | 111.1111111111 kwh |
| 500 mj | 138.8888888889 kwh |
| 1000 mj | 277.7777777778 kwh |
Conversietabel van Kilowatt Hours naar Megajoules
| Kilowatt Hours (kwh) | Megajoules (mj) |
|---|---|
| 0.1 kwh | 0.36 mj |
| 0.25 kwh | 0.9 mj |
| 0.5 kwh | 1.8 mj |
| 1 kwh | 3.6 mj |
| 2 kwh | 7.2 mj |
| 5 kwh | 18 mj |
| 10 kwh | 36 mj |
| 20 kwh | 72 mj |
| 30 kwh | 108 mj |
| 50 kwh | 180 mj |
| 60 kwh | 216 mj |
| 100 kwh | 360 mj |
Megajoules naar Kilowatt Hours in alledaagse voorwerpen
Herkenbare praktijkvoorbeelden waarmee u Megajoules en Kilowatt Hours in één oogopslag kunt visualiseren.
| Megajoules (mj) | Kilowatt Hours (kwh) | |
|---|---|---|
| A chocolate bar of 250 kcal | 1.046 mj | 0.2905555556 kwh |
| One therm of natural gas | 105.506 mj | 29.3072222222 kwh |
| A day of gas heating in winter | 400 mj | 111.1111111111 kwh |
| An EV battery of 60 kWh | 216 mj | 60 kwh |
| An LPG barbecue bottle of 9 kg | 414 mj | 115 kwh |
| A month of electricity for an American home | 3240 mj | 900 kwh |
Wanneer u Megajoules naar Kilowatt Hours moet omrekenen
Reading Australian gas bills
A winter bill with 12.000 MJ of gas converts to 3333,33 kWh. Settled at your electricity rate, that immediately shows whether gas heating still beats a heat pump.
Choosing a hot water installation
Installers quote gas units in MJ/h and electric ones in kW. A continuous-flow model of 200 MJ/h converts to 55,556 kWh of heat per hour — more than fifteen times a standard electric element of 3,6 kW.
Planning gas for barbecue and patio
An LPG bottle of 9 kg contains about 414 MJ of chemical energy, or 115 kWh. Converting the bottle capacity this way shows how many long barbecue evenings one refill lasts, before you need to swap.
Comparing fuels for home heating
Air heating on gas is rated in MJ/h, while electric alternatives are quoted in kW. Converting a ducted gas system of 400 MJ/h to 111,111 kWh per hour puts both technologies on the same scale, for a fair table of running costs.
Related Energy Conversions
Hoe te gebruiken
-
1
Enter megajoules
Type the MJ value from your gas bill, heating specification or fuel table — for example 400 MJ, a typical winter day of gas heating at home
-
2
View kilowatt hours
The equivalent on electricity scale appears instantly: 400 MJ converts to 111,111 kWh, ready to compare with your electricity rate
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3
Copy or swap
Copy the result or click Swap to convert kilowatt hours back to megajoules, for checks in the reverse direction
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4
Calculate the price
Multiply the kWh result by your electricity rate to compare fuels: at €0,30 per kWh, that 400 MJ of gas (111,111 kWh) would cost €33,33 as electricity — often much more than the gas bill
Waarom Be Converter gebruiken?
Instant conversion
Get precise results from MJ to kWh in real time while you type — ideal for reading gas bills and heating specifications
Exact ratio of 1/3,6
Uses the exact definition 1 kWh = 3,6 MJ, so 360 MJ always lands exactly on 100 kWh without cumulative rounding errors
Conversion table
Handy reference from 1 MJ (0,2778 kWh) via 105,5 MJ (one therm, 29,3 kWh) to 1000 MJ (277,8 kWh)
Two-way
Easily switch between megajoules and kilowatt hours with one click, to check both directions of a calculation
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Veelgestelde vragen
How many kilowattuur fit in 1 megajoule?
How do I convert 100 MJ to kWh?
How many kWh is one therm of gas?
Why does an Australian gas bill show MJ?
How much gas does a geyser use?
How much is 1000 MJ in kilowattuur?
Is an MJ bigger than a kWh?
How do I convert MJ to kWh mentally?
About the converter megajoules to kilowatt hours
Our free online converter from megajoules to kilowatt hours offers instant, accurate energy conversions for gas bills, heating systems and cross-fuel comparisons. In Australia and New Zealand, natural gas is sold per megajoule, while electricity is settled per kilowatt hour — and since 1 MJ = 0,277778 kWh exactly, translating between both units is the fastest way to see which fuel is cheaper for heating, hot water and cooking. Engineers also encounter MJ in boiler outputs, fuel energy tables and specifications of hot water installations, after which they need kWh to align those figures with electricity rates and appliance labels. This tool covers the full range, from a single MJ to quantities on grid scale, with a factor based on the exact definition.
Expert tips for converting MJ to kWh
The exact ratio is 1 MJ = 1/3,6 kWh = 0,277778 kWh. Memorize two anchors: 90 MJ = 25 kWh and 360 MJ = 100 kWh, and interpolate everything in between.
Checking an Australian gas bill: multiply the MJ consumption by your rate in cents per MJ, convert the same MJ to kWh (÷3,6) and price it at your electricity rate — the difference is your potential saving by switching fuels.
Therms on American bills convert via MJ: 1 therm = 105,506 MJ = 29,307 kWh. Combine the two steps when comparing American gas prices with the running costs of an electric heat pump.
For geyser buyers: a continuous-flow gas unit rated at 200 MJ/h delivers 55,6 kW of heating power, versus a typical electric element of 3,6 kW — that is why gas units heat up faster.
For CO2 accounting, converting the annual gas MJ to kWh (÷3,6) puts all your household energy in one column; multiplying by one grid emission factor then gives the total CO2 from both fuels.