How to Change Your Wi-Fi Channel, and When It Helps

Leave your router’s channel on Auto unless you have problems that point to interference: dropouts or slowdowns that come and go, often at busy times of day, in rooms that otherwise get a decent signal. If you do pick a channel by hand on 2.4 GHz, use 1, 6 or 11. Changing the channel won’t fix a room that is too far from the router.

This guide is based on Apple, Netgear, ASUS, eero and Cisco Meraki documentation. We have not tested channel changes on these routers.

What is a Wi-Fi channel?

Apple describes channels as “lanes in a street”: each band is split into separate channels, and your router uses one at a time on each band. Nearby routers on the same or overlapping channels compete for airtime, which can slow things down.

When channel selection is set to automatic, Apple says, “your router selects the best Wi-Fi channel for you.” Netgear says its routers pick a 2.4 GHz channel based on your environment, and ASUS routers set the channel to Auto by default.

When does changing the channel help?

Netgear suggests changing channels if you have “frequent lost connections, slow data transfers, or other WiFi issues that can be caused by interference,” and advises keeping the defaults otherwise. Apple’s interference guide lists changing the channel, or letting the router scan for the least congested one, as a fix for interference.

Which channel should you pick?

2.4 GHz: use 1, 6 or 11. Cisco Meraki’s channel planning guide says that in the US, channels 1 through 11 are permitted, which “provides three non-overlapping channels 1, 6 and 11.” Other channels overlap their neighbors. Apple also recommends a 20 MHz channel width on 2.4 GHz to avoid problems near other networks and Bluetooth devices.

5 GHz and 6 GHz: Auto usually works. These bands have many more channels. Apple recommends Auto or all widths for them, and says interference “is less of a concern in these bands.” See 2.4 GHz vs. 5 GHz vs. 6 GHz.

If you have more than one router or access point, Apple recommends configuring each to use a different channel, especially when they’re close together. Netgear, by contrast, says extenders should use the same channels as the router, so check your extender’s instructions.

What are DFS channels on 5 GHz?

Part of the 5 GHz band is shared with radar. Meraki says these channels “are required to use Dynamic Frequency Selection (DFS),” and that an access point that detects radar “must immediately stop using that channel and randomly pick a new channel.”

ASUS describes what that means at home:

• Before using a DFS channel, the router runs a Channel Availability Check that takes “1-10 minutes depending on the country,” and 5 GHz is unavailable during it.
• If radar is detected, devices may disconnect for a while and reconnect on the new channel.
• A router set to 160 MHz may drop to 80 MHz.
• ASUS suggests not enabling DFS channels where 5 GHz disconnects or runs slowly because of heavy interference.

If your 5 GHz network drops for a minute or more at random, try excluding DFS channels from automatic selection.

How to change the channel

Netgear: sign in at routerlogin.net, open Wireless, scroll to the band you want, pick a channel from the Channel menu, and click Apply. Not every channel is available in every region. Netgear also suggests the WiFi Analytics tool in its Nighthawk and Orbi Android apps to find less congested channels.

ASUS: sign in to the web interface at your router’s address or asusrouter.com, go to Wireless, then General, choose the band and set the Control Channel. On 5 GHz, uncheck “Auto select channel including DFS channels” before choosing a specific channel. ASUS says channel selection is in the web interface only, not the app.

eero: there’s no manual channel setting. Eero says it “selects optimal channels for your network” over two days to a week, and changes them infrequently because “channel changes can briefly disrupt your connection.” It also notes that reboots and resets restart this process, so avoid unnecessary restarts.

Google Nest Wifi and Google Wifi: Google’s help pages describe the system choosing bands automatically and don’t describe a manual channel setting.

After any change, test in the rooms that had problems for a day or two before deciding it worked.

Fact-check notes

Bottom line

Keep channels on Auto. If problems come and go and look like interference, try 1, 6 or 11 on 2.4 GHz, move devices to 5 GHz, or exclude DFS channels if 5 GHz drops at random. If a room is weak all the time, fix coverage instead.