Those Boring Tools
Networking & IT ToolsPrivate by design

Wi-Fi dBm to Percent Calculator

Enter a Wi-Fi signal strength in dBm to convert it into an approximate signal quality percentage.

How to use this tool

  1. 1Enter your signal strength reading in dBm (a negative number).
  2. 2See the approximate signal quality percentage and rating.

Frequently asked questions

Is this conversion exact?+

No — dBm is a logarithmic power measurement while percentage is a linear approximation many Wi-Fi utilities use for a simple display; treat the percentage as a rough guide, not a precise measurement.

Keep the boring tools boring.

If this saved you five minutes of nonsense, you can help keep the free tools running.

Buy the toolbox a coffee