Kilowatt-hours to Megawatt-hours Converter
One Kilowatt-hour equals 0.001 Megawatt-hours (1 kWh = 0.001 MWh). Multiply a Kilowatt-hour value by 0.001 to get the equivalent in Megawatt-hours. Enter a value above to calculate the result. You can also use the formula and reference table below.
Formula
MWh = kWh × 0.001
Multiply the Kilowatt-hour value by 0.001 to get the equivalent value in Megawatt-hours.
Example Conversions
1 Kilowatt-hour (kWh)
0.001 Megawatt-hour (MWh)
5 Kilowatt-hour (kWh)
0.005 Megawatt-hour (MWh)
10 Kilowatt-hour (kWh)
0.01 Megawatt-hour (MWh)
25 Kilowatt-hour (kWh)
0.025 Megawatt-hour (MWh)
100 Kilowatt-hour (kWh)
0.1 Megawatt-hour (MWh)
Conversion Table
| Kilowatt-hour (kWh) | Megawatt-hour (MWh) |
|---|---|
| 0.1 | 0.0001 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
How to Convert Manually
Use these steps to convert Kilowatt-hour values to Megawatt-hour without the calculator.
- Write down the value in Kilowatt-hour (kWh) that you want to convert.
- Multiply that value by 0.001.
- For example, 10 Kilowatt-hours × 0.001 = 0.01 Megawatt-hours.
- Label the result as Megawatt-hour (MWh).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Kilowatt-hour and one Megawatt-hour.
About Kilowatt-hour and Megawatt-hour
The kilowatt-hour is exactly 3.6 megajoules. It is the unit on your electricity bill. Household consumption and electric vehicle battery sizes are stated in kilowatt-hours. The megawatt-hour is 1,000 kilowatt-hours. Power plants, grid storage, and wholesale electricity markets trade in megawatt-hours. One Kilowatt-hour equals 0.001 Megawatt-hours (1 kWh = 0.001 MWh). Kilowatt-hour is used in electricity billing and in electric vehicle battery capacity. Megawatt-hour is used in wholesale electricity markets.
Precision and Rounding:Energy factors mix exact definitions (1 kWh = 3,600,000 J; 1 cal = 4.184 J thermochemical) with measured conventions (1 BTU ≈ 1,055.056 J). Nutrition and utility bills round to whole units; engineering heat calculations should keep the full factor until the final step.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15Kilowatt-hours equals0.015Megawatt-hours.
15 kWh × 0.001 = 0.015 MWh
FAQ
How do I convert Kilowatt-hour to Megawatt-hour?
Multiply the Kilowatt-hour value by 0.001 to get the equivalent value in Megawatt-hours.
What is the formula for Kilowatt-hour to Megawatt-hour?
The formula is MWh = kWh × 0.001.
How many Megawatt-hours are in 1 Kilowatt-hour?
1 Kilowatt-hour equals 0.001 Megawatt-hours.
Can I convert Megawatt-hour back to Kilowatt-hour?
Yes. 1 Megawatt-hour equals 1000 Kilowatt-hours, and the related converter can reverse the calculation.
What are common names for Kilowatt-hour and Megawatt-hour?
Kilowatt-hour is shown as kWh and may also be searched as kilowatt hour, kilowatt-hour, kwh. Megawatt-hour is shown as MWh and may also be searched as megawatt hour, megawatt-hour.
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