Power and Energy
WhtoMWh
Convert watt-hours (Wh) to megawatt-hours (MWh).
Factor1 Wh = 1e-6 MWh
Converter
Wh
Accepts numbers or expressions, e.g. 150 + 14.7
Result
MWh
Rendered to 6 significant figures.
Formula
Formula
MWh = Wh × 1e-6
Multiply any value in watt-hours by 1e-6 to obtain the value in megawatt-hours.
Worked example
Convert 1.00000e+6 Wh to MWh.
- 01Start with 1.00000e+6 Wh.
- 02Multiply by the conversion factor: 1.00000e+6 × 1e-6 = 1 MWh.
Result1.00000e+6 Wh = 1 MWh
Conversion table
| Wh | MWh |
|---|---|
| 1 | 1e-6 |
| 2 | 2e-6 |
| 5 | 5e-6 |
| 10 | 1e-5 |
| 20 | 2e-5 |
| 50 | 5e-5 |
| 100 | 0.0001 |
| 200 | 0.0002 |
| 500 | 0.0005 |
| 1000 | 0.001 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from Wh to MWh?
1 Wh equals 1e-6 MWh. To convert, multiply the value in watt-hours by 1e-6.
How do I convert 1 Wh to MWh?
1 Wh = 1e-6 MWh. For any value, multiply by 1e-6.
How do I convert MWh back to Wh?
Divide by the same factor — or equivalently, multiply by 1000000. So 1 MWh = 1.00000e+6 Wh.
When would I need to convert watt-hour to megawatt-hour?
Energy conversions are needed when reconciling fuel/electrical billing, calculating thermal duties, and aligning calorimetry or HHV/LHV figures across data sources.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).