Free Online Tool
dBm to Watt Converter
Convert RF power values between dBm, mW, and W for communication and RF circuit work.
The result will appear here.
How to Use
- Choose the input unit from dBm, mW, or W.
- Enter a value.
- Review the result in dBm, mW, and W.
Examples
- Check that 0dBm equals 1mW
- Convert 1W to 30dBm
Calculation and Conversion Notes
To convert dBm to mW, the tool uses `P(mW) = 10^(dBm / 10)`. To convert mW to dBm, it uses `dBm = 10 × log10(P(mW))`. W and mW are converted using `P(mW) = P(W) × 1000`.
FAQ
Does dBm to Watt Converter save my input?
No. Your input is not stored on a server. Supported actions run in your browser.
Can I use it on mobile?
Yes. The pages are responsive and work on desktop and mobile browsers.
Can I rely on the result?
Use the result as a quick reference. Important work should be checked separately.