What actually slows down your internet, and what you can fix
Internet speed depends on three separate things: the speed your provider sells you, the speed your equipment can handle, and interference or distance between your device and the router. Most people can improve their connection by fixing the second and third — you cannot change what your provider delivers, but you can stop wasting it.
Start by testing what speed you actually get. Go to speedtest.net or fast.com on a wired computer (not Wi-Fi) and run the test at different times of day. Write down the results. If you consistently get close to what your bill says you should get, your provider is delivering the speed. If you get much less, the problem is between your modem and your device.
The most common culprits are a router placed in a corner or closet, too many devices connected at once, Wi-Fi interference from neighbors' networks, or an old router that cannot handle modern speeds even if your modem can. Each has a different fix.
Key Takeaways
- Test your actual speed on a wired connection first — if it matches your bill, the problem is Wi-Fi, not your provider.
- Move your router to the center of your home, away from walls and metal objects, to reach more devices at full strength.
- Restart your modem and router once a month by unplugging them for 30 seconds, which clears temporary slowdowns that accumulate over time.
- Reduce Wi-Fi interference by changing your router's channel in the settings — channels 1, 6, and 11 on 2.4 GHz cause less overlap with neighbors' networks.
- Disconnect devices you are not using from Wi-Fi, since each active connection shares your bandwidth and slows everything else down.
Move your router to a better location
Router placement is the single easiest fix. A router in a closet, cabinet, or corner of your home will not reach the far side of your house at full speed. The signal weakens through walls, especially if they contain metal studs or pipes, and bounces poorly off hard surfaces.
Place your router in the center of your home, elevated off the ground — on a shelf or mounted on a wall works better than sitting on the floor. Keep it away from the microwave, cordless phones, and baby monitors, which broadcast on the same 2.4 GHz frequency and create noise that drowns out your Wi-Fi signal. If you have a two-story home, put the router on the middle floor or in a central hallway rather than in a bedroom corner.
If one room is far from the router and consistently slow, you have two options: move the router closer to that room, or buy a mesh Wi-Fi system that uses multiple units to blanket your home. Mesh systems cost more but work better in large homes or homes with thick walls.
Restart your modem and router monthly
Modems and routers accumulate temporary data and connections over weeks of use, which gradually slows them down. A restart clears this buildup and usually restores speed without any other changes.
Unplug your modem first, wait 30 seconds, and plug it back in. Wait for all the lights to stop blinking and stabilize — this takes two to three minutes. Then unplug your router, wait 30 seconds, and plug it back in. Wait another two to three minutes for it to fully restart. Do this once a month, or whenever you notice speed dropping for no obvious reason.
If speed drops again within a few days, your modem or router may be failing and need replacement. Contact your provider about a modem swap — they usually provide the modem at no extra cost. If the router is yours, you may need to buy a new one.
Change your Wi-Fi channel to reduce interference
Wi-Fi routers broadcast on channels, and if your neighbors' routers use the same channel, they interfere with each other and slow both networks down. The 2.4 GHz band — which older devices and budget routers use — has only three non-overlapping channels: 1, 6, and 11. Most routers default to channel 6, so if you live in an apartment or close to neighbors, you are probably competing with them.
Log into your router's settings by typing 192.168.1.1 or 192.168.0.1 into a web browser, or use your router's app. Look for a wireless settings or channel section. Try changing to channel 1 or 11 instead of 6. Run a speed test after the change. If it improves, you have found a less crowded channel. If not, try the other one.
If your router supports 5 GHz, that band has many more channels and usually less interference, but it does not travel as far through walls. Devices far from the router may not see the 5 GHz network at all. Most modern routers broadcast both bands at once, so you can connect devices that need range to 2.4 GHz and devices that need speed to 5 GHz.
Disconnect devices you are not actively using
Every device connected to your Wi-Fi shares your bandwidth. A phone downloading updates in the background, a smart TV streaming in another room, or a laptop left on and syncing files all eat into the speed available for the device you are trying to use right now.
Check your router's settings or app to see which devices are connected. Disconnect phones, tablets, and computers you are not using. Turn off Wi-Fi on devices that do not need it constantly — a smartwatch or fitness tracker does not need to stay connected all day. If you have guests over, ask them to disconnect when they leave instead of leaving their phones connected indefinitely.
If you have many smart home devices (lights, thermostats, cameras, speakers), they may be consuming bandwidth even when idle. Consider putting them on a separate Wi-Fi network if your router supports a guest network, so they do not compete with your main devices.
Upgrade your router if it is more than five years old
Routers have a lifespan. After five to seven years, they slow down due to worn components and cannot handle modern speeds even if your modem and provider can deliver them. If you have tested everything above and still get much less speed than your bill promises, an old router is likely the problem.
When buying a new router, match it to your internet speed. A router rated for 300 Mbps will bottleneck a 500 Mbps connection. Look for routers rated for at least your plan's speed, plus some headroom. Wi-Fi 6 (802.11ax) routers are faster than older Wi-Fi 5 models, but they cost more. For most homes, a mid-range Wi-Fi 5 or Wi-Fi 6 router from a major brand will work well.
If you rent your modem from your provider, ask whether they have upgraded you to a newer model. Older modems provided by providers can also limit speed. A free modem swap is worth requesting if yours is more than five years old.
Check for background downloads and updates
Windows, macOS, phones, and apps all download updates automatically in the background. A single large update can consume most of your bandwidth for hours without you noticing. Games, streaming apps, and cloud storage also sync and download when you are not looking.
On Windows, open Settings, go to Update & Security, and check Windows Update. If an update is downloading, wait for it to finish before testing speed. On Mac, go to System Preferences and check Software Update. On your phone, go to Settings and look for Software Update or System Update.
In your router settings, you can also set a time window when updates are allowed — for example, between 2 a.m. and 4 a.m. — so they do not interfere with daytime use. Most routers have a scheduling option in the advanced settings.
Frequently Asked Questions
Why is my speed fine on my phone but slow on my laptop?
Your laptop may be farther from the router or on a different Wi-Fi band. Move closer to the router or switch your laptop to the 5 GHz band if available. If the laptop is wired with Ethernet, it should be faster — if it is not, the Ethernet cable or port may be damaged.
Does restarting my router erase my Wi-Fi password?
No. A normal restart (unplugging for 30 seconds) keeps all your settings. A factory reset erases everything, but you should never do that unless your router is completely broken. Stick to the 30-second restart method.
Will a Wi-Fi extender or booster fix my slow speed?
Extenders repeat your Wi-Fi signal to reach farther, but they do not increase speed — they actually cut it in half because they receive and transmit on the same channel. A mesh system is better if you need coverage in distant rooms. If you only have one slow room, moving the router closer is the cheapest fix.
Is my internet provider throttling my speed?
Throttling is rare for home internet. Test your speed multiple times at different times of day. If you consistently get much less than your bill promises on a wired connection, contact your provider and ask them to test the line. They can see if the modem is the problem.
How much should I expect my speed to improve?
If you are on Wi-Fi far from the router, moving it closer or switching to 5 GHz can double your speed. Restarting the modem might improve speed by 10 to 20 percent. Changing channels helps only if neighbors are interfering. The total improvement depends on what was actually slowing you down.