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Watt to Milliwatt
Convert Watt to Milliwatt and get the exact value instantly.
About this conversion
To convert Watt to Milliwatt, multiply the number of Watt by 1000.
Power is measured in watts, kilowatts or horsepower, so comparing an engine, a motor and an appliance usually means converting to one shared unit first.
Conversion table
| Watt (W) | Milliwatt (mW) |
|---|---|
| 1 W | 1000 mW |
| 2 W | 2000 mW |
| 5 W | 5000 mW |
| 10 W | 10000 mW |
| 100 W | 100000 mW |
How to use this converter
- Enter your Watt value
Type any number into the Watt field. It starts at 1 so you can read the rate straight away.
- Read the Milliwatt result
The amount in Milliwatt updates as you type, so there is no button to press and nothing to wait for.
- Swap or keep exploring
Use the swap control to flip the direction, or pick a related conversion from the list below.
Frequently asked
- How many Milliwatt are in one Watt?
- One Watt equals 1000 mW. Enter any amount above to get an exact figure for your own value.
- Is this converter accurate?
- Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.
- Do you upload the numbers I enter?
- No. The Watt to Milliwatt conversion runs entirely in your browser tab, and nothing you type is sent to a server.
- Does it work on my phone?
- Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.
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