Why your wireless signal slows down, and what you can actually fix
Wireless internet slows down for three main reasons: your router is too far away or blocked by walls, too many devices are connected at once, or your router is using an older standard that was never fast to begin with. You cannot change the speed your internet service provider sends to your home, but you can change how much of that speed actually reaches your devices. Most people gain 20 to 50 percent more usable speed by moving their router, switching to a less crowded wireless channel, or both.
The fixes that work depend on what is actually slowing you down. If your router sits in a closet three rooms away, moving it will help more than any setting change. If your router is in the right place but you live in an apartment building where dozens of networks overlap, changing channels will help more than moving it. This section covers the changes you can make yourself, in order from fastest to slowest to set up.
Key Takeaways
- Moving your router to the center of your home, away from walls and metal objects, usually improves speed more than any other single change.
- Switching from the 2.4 GHz band to the 5 GHz band can double your speed if your devices support it, though the signal does not travel as far.
- Changing your wireless channel from the default (usually channel 1, 6, or 11) to a less crowded one takes five minutes and often adds 10 to 30 percent speed.
- Restarting your router clears its memory and can temporarily restore speed, though the effect usually lasts only a few days or weeks.
- If your router is more than five years old, it may use an older wireless standard that limits speed no matter what you do.
Move your router to the center of your home, elevated and away from obstacles
The single biggest factor in wireless speed is distance and what sits between you and the router. Walls, especially those with metal studs or plumbing, absorb and scatter the signal. Microwaves, baby monitors, and cordless phones broadcast on the same 2.4 GHz frequency as most routers and create interference. A router in a closet, basement, or corner of your home will deliver much slower speeds to the rest of the house than one in a central location.
Place your router on a shelf or wall mount in a central room — ideally a hallway or living room — rather than on the floor or hidden behind furniture. Elevating it even three feet makes a measurable difference. Keep it away from the kitchen (microwave interference), away from metal filing cabinets or radiators, and away from thick concrete or brick walls if possible. If your home is large or has many walls, you may find that no single location works well for every room; in that case, a location that serves the rooms you use most is the practical choice.
Test the change by running a speed test from the same device in the same location before and after moving the router. You should see an improvement within a few minutes of the router powering on in its new location.
Switch to the 5 GHz band if your devices support it
Most routers broadcast on two frequencies at once: 2.4 GHz and 5 GHz. The 2.4 GHz band travels farther and passes through walls better, but it is crowded — cordless phones, microwaves, baby monitors, and dozens of neighboring routers all use it. The 5 GHz band is faster and less crowded, but the signal does not travel as far and does not pass through walls as well.
If you are sitting in the same room as your router or within 30 feet of it with few walls between, switching to 5 GHz will usually double your speed. Older devices (phones, laptops, or tablets from before 2015) may not support 5 GHz at all. Check your device's specifications or look in your wireless network list — if you see two network names from your router (one ending in "5G" or labeled "5GHz"), your router broadcasts both bands and your device can choose.
To switch, open your wireless network list on your device and connect to the 5 GHz network instead of the 2.4 GHz one. You will need to enter your password again. If the 5 GHz network does not appear, your device does not support it. If the speed is slower on 5 GHz than 2.4 GHz, you are too far from the router or there are too many walls between you — switch back to 2.4 GHz.
Change your wireless channel to reduce interference from neighboring networks
Your router broadcasts on one of 11 or 13 channels (depending on your region), but most people never change it from the factory default. In apartments or dense neighborhoods, dozens of routers may all be set to channel 1, 6, or 11, creating a traffic jam. Switching to a less crowded channel can add 10 to 30 percent speed with no hardware change.
To find which channels are crowded, you need a tool that shows you what other networks are nearby. On Windows, read and run WiFi Analyzer (free, from Microsoft Store). On Mac, hold Option and click the WiFi icon in the menu bar to see nearby networks and their channels. On a phone, read WiFi Analyzer (Android) or WiFi SweetSpots (iPhone). These tools show you a graph of which channels have the least overlap.
Once you know which channel is least crowded, log into your router's settings. Open a web browser and type 192.168.1.1 or 192.168.0.1 into the address bar (check your router's label if neither works). Enter your admin username and password (also on the label, often "admin" and "admin" or "admin" and the router's serial number). Find the wireless settings section, look for "Channel" or "WiFi Channel", and change it to the less crowded one. Save and restart the router. The change takes effect in a few minutes.
Restart your router to clear its memory and temporary slowdowns
Routers store information about every device connected to them and every data transfer that passes through. Over weeks or months, this memory fills up and the router slows down. Restarting clears this memory and can restore speed, though the effect is usually temporary — the slowdown returns after a few days or weeks.
To restart, unplug the power cable from the back of the router, wait 30 seconds, and plug it back in. The lights will flash as it boots up, which takes two to three minutes. Once the lights settle into their normal pattern, test your speed. If you see an improvement, restart the router once a month to maintain it. If you see no improvement, the slowdown is not caused by memory buildup.
Do not use the reset button on the router unless you want to erase all your settings and start over — that is different from a restart and will require you to set up the network again from scratch.
Check whether your router is old enough to limit your speed
Wireless standards have improved over time. A router from 2015 or earlier may use the 802.11n standard, which has a theoretical maximum speed of 150 to 600 Mbps depending on the model. A router from 2016 onward likely uses 802.11ac, which reaches 1300 Mbps or higher. If your internet service is faster than your router's maximum, the router is the bottleneck — no amount of repositioning or channel-switching will help.
Check your router's model number (on the label) and search for its specifications online. Look for "802.11" followed by a letter — that letter tells you the standard. If it says 802.11n, your router is at least eight years old and may be limiting your speed. If it says 802.11ac or 802.11ax (the newest standard), your router is new enough that something else is the problem.
If your router is old and you have already moved it, switched bands, and changed channels with no improvement, replacing it is the next step. Routers cost between $50 and $300 depending on the size of your home and the speed you want to support.
Reduce the number of devices connected at once
Every device connected to your router shares the available bandwidth. If you have 20 devices connected — phones, tablets, computers, smart speakers, security cameras, thermostats — they are all competing for the same wireless channel. Disconnecting devices you are not using frees up bandwidth for the ones you are.
Check your router's settings to see what is connected. Log in the same way you would to change the channel (192.168.1.1 or 192.168.0.1), find the "Connected Devices" or "DHCP Clients" section, and look at the list. Devices you do not recognize or do not use regularly can be disconnected by removing them from the network or straightforward forgetting the network on that device so it stops connecting automatically.
If you have many smart home devices, consider putting them on a separate network if your router supports it. Some routers let you create a "guest network" that is separate from your main one — smart devices can use the guest network while you use the main one, so they do not compete for bandwidth when you are working or streaming.
Frequently Asked Questions
Will moving my router really make that much difference?
Yes, if it is currently hidden or far from where you use it. A router in a central location, elevated and away from walls, typically delivers 30 to 50 percent more speed than one in a closet or corner. The effect is largest if you are far from the router or have many walls between you and it.
What is the difference between 2.4 GHz and 5 GHz?
2.4 GHz is slower but travels farther and passes through walls better. 5 GHz is faster but does not travel as far. Use 5 GHz if you are close to the router; use 2.4 GHz if you are far away or have many walls between you and it. Older devices may only support 2.4 GHz.
Do I need to change my password when I change the wireless channel?
No. Changing the channel does not change your password or network name. Your devices will stay connected and will not ask you to re-enter the password. If they disconnect, reconnect them manually, but you should not need to type the password again.
How often should I restart my router?
Once a month is a reasonable schedule if you notice speed improving after a restart. If you see no improvement, restarting will not help and you do not need to do it. Some people restart weekly as routine maintenance, but the benefit is usually small unless you have many devices connected.
What should I do if none of these changes help?
The problem may be with your internet service itself rather than your wireless setup. Run a speed test while connected to the router with an ethernet cable (if possible) to see if the wired speed is also slow. If it is, contact your internet service provider. If the wired speed is fast but wireless is slow, the problem is your router or wireless setup.