Kilowatt-hour to Megawatt-hour Converter
One Kilowatt-hour equals 0.001 Megawatt-hour (1 kWh = 0.001 MWh). Multiply a Kilowatt-hour value by 0.001 to get the equivalent in Megawatt-hour. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
MWh = kWh × 0.001
Multiply the Kilowatt-hour value by 0.001 to get the equivalent value in Megawatt-hour.
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-hour × 0.001 = 0.01 Megawatt-hour.
- 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 — 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-hour (1 kWh = 0.001 MWh). Kilowatt-hour to Megawatt-hour conversion comes up most often in electricity billing and in electric vehicle battery capacity, typically when figures need restating for 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
15 Kilowatt-hour equals 0.015 Megawatt-hour.
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-hour.
What is the formula for Kilowatt-hour to Megawatt-hour?
The formula is MWh = kWh × 0.001.
How many Megawatt-hour are in 1 Kilowatt-hour?
1 Kilowatt-hour equals 0.001 Megawatt-hour.
Can I convert Megawatt-hour back to Kilowatt-hour?
Yes. 1 Megawatt-hour equals 1000 Kilowatt-hour, 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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