What slows down your internet and how to fix it

Your internet speed depends on three things: the connection your provider sends to your home, what happens to that signal inside your home, and what your devices are doing with it. Most people can improve their speed without calling their provider by fixing the second and third parts. The fixes that work are: moving your router, reducing interference, closing programs that hog bandwidth, and checking whether your devices support the speeds you're paying for.

Before you start, run a speed test at speedtest.net or fast.com to see what you're actually getting. Write down the number. Then try the fixes below and test again. You'll know which ones matter for your setup.

Key Takeaways

  • Your router's location matters more than most people think — place it in a central, elevated spot away from walls, metal objects, and other wireless devices.
  • Interference from microwaves, cordless phones, and neighboring Wi-Fi networks can cut your speed in half; switching your router to a less crowded Wi-Fi channel costs nothing and often helps immediately.
  • Background programs like cloud backup, Windows updates, and streaming services running on other devices consume bandwidth you don't see; closing them can free up 20 to 50 percent of your speed.
  • Older devices may not support faster speeds even if your connection is fast; check your device's Wi-Fi standard (look for Wi-Fi 6 or Wi-Fi 5 for newer speeds) before assuming your router is the problem.
  • A wired connection via ethernet cable is always faster and more stable than Wi-Fi, even if your router is in the perfect spot.

Move and position your router correctly

Your router broadcasts a radio signal, and walls, metal, and distance weaken it. The best location is central to your home, elevated (on a shelf or wall mount, not the floor), and away from metal objects like filing cabinets or refrigerators. If your router is in a corner, in a closet, or hidden behind a TV, moving it will often improve speed noticeably.

Height matters because the signal spreads downward and outward. A router on a high shelf reaches more of your home than one on the ground. If you can't move your main router, a mesh system (like Eero, Netgear Orbi, or TP-Link Deco) places smaller units throughout your home to extend the signal. These cost $100 to $300 but work better than a single router in a large house.

Test your speed from different rooms. If one room is much slower, your router is too far away or blocked. Moving it closer or removing obstacles between the router and that room will help more than any other single change.

Reduce Wi-Fi interference from other devices

Wi-Fi operates on the 2.4 GHz frequency, which is also used by microwaves, cordless phones, baby monitors, and Bluetooth devices. When these run near your router, they create interference that slows your connection. The 5 GHz frequency (used by newer routers and devices) has less interference but doesn't travel as far through walls.

Most routers let you switch which channel they broadcast on. Your router's default channel is often crowded because your neighbors' routers use the same default. Changing it takes five minutes. Log into your router's settings (usually 192.168.1.1 in your browser address bar; check your router's label for the exact address and password). Look for "Wi-Fi channel" or "Channel settings" and try channels 1, 6, or 11 on the 2.4 GHz band — these don't overlap with each other. Use a Wi-Fi analyzer app like WiFi Analyzer (free on Android) or iStumbler (free on Mac) to see which channels your neighbors are using, then pick one they're not.

If you have a dual-band router (most modern ones do), connect devices that need speed to the 5 GHz band. Older devices won't see it, but newer phones, laptops, and tablets will connect faster on 5 GHz if they're close to the router.

Close programs and services using your bandwidth

Bandwidth is shared among all devices and programs on your network. If your computer is backing up to OneDrive or Google Drive, updating Windows, or streaming video in the background, it's using speed you don't see. Check what's running before you blame your router.

On Windows, open Task Manager (press Ctrl+Shift+Esc), click the "Performance" tab, then "Open Resource Monitor" at the bottom. Click the "Network" tab and look at the "Processes with Network Activity" section. You'll see which programs are sending or receiving data. Close anything you don't need running right now. Common culprits are Windows Update, OneDrive, Dropbox, Spotify, and Chrome background services.

On Mac, open Activity Monitor (search for it in Spotlight), click the "Network" tab, and look at the "Sent Bytes" and "Recv'd Bytes" columns. Sort by "Recv'd Bytes" to see what's downloading. Close programs you don't need.

Also check other devices on your network. If someone is streaming Netflix, downloading files, or playing online games, they're using bandwidth. Ask them to pause or switch to a wired connection if they need speed.

Check whether your devices support faster speeds

Your device's Wi-Fi standard determines the maximum speed it can receive, regardless of how fast your router is. Older devices max out at slower speeds. Look for the Wi-Fi standard on your device's specs: Wi-Fi 6 (802.11ax) and Wi-Fi 5 (802.11ac) are fast; Wi-Fi 4 (802.11n) is older and slower; anything older than that is very slow.

If your phone or laptop is more than five years old, it probably doesn't support Wi-Fi 5 or 6. Upgrading the device will help more than upgrading your router. If your device is newer but still slow, check the manufacturer's specs to confirm which Wi-Fi standard it has. Some budget phones support only Wi-Fi 4 even though they're recent.

You can also check your device's actual connection speed. On Windows, right-click the Wi-Fi icon in the taskbar and select "Open Network & Internet settings," then click "Advanced network options" and look for "Link speed." On Mac, hold Option and click the Wi-Fi icon in the menu bar — it shows "Tx Rate" (transmit speed). If your device shows 50 Mbps but your router supports 300 Mbps, your device is the bottleneck.

Use a wired connection for devices that need speed

An ethernet cable connected directly to your router is always faster and more stable than Wi-Fi. If you're downloading large files, video conferencing, or gaming, plug in an ethernet cable if you can. Even a 25-foot cable run under a rug or along a baseboard is worth it for devices that stay in one place.

If you can't run a cable to a device, a powerline adapter (like TP-Link AV1000 or Netgear Powerline) sends your internet signal through your home's electrical wiring. Plug one adapter into an outlet near your router and connect it with ethernet, then plug another adapter into an outlet near your device and connect your device to it. This works better than Wi-Fi in homes with thick walls or long distances, though it's slower than a direct cable.

When to contact your provider

If you've moved your router, reduced interference, closed background programs, and confirmed your device supports faster speeds, but you're still getting less than 50 percent of the speed you're paying for, contact your provider. Ask them to check your line for signal issues or degradation. They can run a remote test and tell you whether the problem is on their end or yours.

Before you call, have your speed test results ready and tell them the exact speeds you're getting. If they say the problem is on your end, ask whether they recommend a modem upgrade — older modems can't handle newer speeds. If they recommend a new modem, ask whether they'll provide one or whether you need to buy it yourself. Some providers charge a rental fee; buying your own modem (like a Netgear MB8600 or ARRIS SB8200) often pays for itself in a year.

Frequently Asked Questions

Does restarting my router actually help?

Yes, but only temporarily. Restarting clears your router's memory and reconnects all devices, which can fix slowdowns caused by memory leaks or stuck connections. Unplug your router for 30 seconds, then plug it back in. If you find yourself restarting it more than once a week, your router may be overheating or failing — try moving it to a cooler spot or replacing it.

Is my internet speed slower because of my Wi-Fi or my provider?

Run a speed test while connected to your router with an ethernet cable. If the speed matches what you're paying for, your Wi-Fi is the problem. If it's much slower, your provider or modem is the issue. Ethernet tests are the only way to know for sure because Wi-Fi speed varies by location and interference.

Should I upgrade my router if it's more than three years old?

Only if you've fixed the problems above and you're still slow, or if your router doesn't support Wi-Fi 5. Routers don't wear out quickly — a three-year-old router works fine if it's in a good location and not overheating. Upgrading helps only if your current router is the actual bottleneck, which you can confirm with an ethernet speed test.

Can I make my Wi-Fi faster by changing the password?

No, but changing your password to something strong prevents neighbors from connecting to your network and using your bandwidth. Use a password with at least 12 characters mixing uppercase, lowercase, numbers, and symbols. You can change it in your router's settings under "Wi-Fi Security" or "Wireless Security."

Why is my speed faster at night than during the day?

Interference and network congestion increase during the day when more people are online. Your neighbors' Wi-Fi, your own devices downloading updates, and your provider's network being busier all slow things down. If daytime slowness is severe, contact your provider — it may indicate a capacity problem on their network rather than interference in your home.