Channel Performance
Channel Performance finds the best Wi-Fi channel for you by measuring how fast the radio can actually push data on each one, and turning that into a single, easy score for every channel.
Rather than guessing from how crowded a channel looks, it runs a real transmit test and reports what actually got through — so a channel that looks empty but is slow will not fool it. The best pick is called out for each band, and a history view shows whether it holds up as conditions change around you.
You need nothing but a phone or computer with a browser. There is no app to install.
Getting started
Open Channel Performance from the menu and pick a band with the 2.4 GHz / 5 GHz toggle in the title bar. The sweep starts by itself and keeps repeating; a full pass over a band takes a minute or so. While it is working, the Wi-Fi symbol in the title bar lights up arc by arc.
How the score is made
On each channel in turn, the Wireless Toolbox's measurement adapter sets up a brief test network of its own and transmits as fast as the channel allows. What got through is that channel's transmit rate. A busy or noisy channel lets less through, so the rate falls — whether the cause is other Wi-Fi or something that is not Wi-Fi at all.
The score is that rate as a percentage of the fastest channel in the band: the fastest channel scores 100.
Channel performance score
One bar per channel. The bar's height and colour are the score — 0 to 100, green is strong, red is poor. The number above each bar is that channel's transmit rate in Mbps, the speed the score comes from. The best channel for the band is called out.
- 2.4 GHz — channels 1 to 11. The recommendation sticks to the non-overlapping channels 1, 6 and 11: an in-between channel, even one that scores higher, would interfere with its neighbours.
- 5 GHz — the non-DFS channels, 36–48 and 149–165. DFS channels (52–144) are not tested.
Performance over time
Each completed sweep adds a row, newest on top, coloured by score from 0 to 100. It shows whether a channel stays good or only looked good for a moment. Performance over time — 3D shows the same history as a surface of channel × time × score; drag to rotate it.
Access points
The chart at the top draws the access points detected nearby over the channels they use, so you can see who is on the channels being scored.
Menu (⋮)
- Save as PDF — see below.
- About — version information.
The ☰ button (top-left) returns to the Wireless Toolbox menu.
Save as PDF
The ⋮ menu (top-right) has Save as PDF. It captures the tool exactly as shown and writes one file to your device’s Downloads folder, named with the tool and a timestamp, e.g. ChannelPerformance 2026-08-13 14.32.05.pdf. Every save is timestamped, so nothing is overwritten.