What slows down your internet, and what you can fix right now

Internet speed depends on three things: what your provider sends to your home, what your equipment does with it, and what's using it once it arrives. You can't change your provider's speed without paying more, but you can almost always improve the second and third. Start by running a speed test at speedtest.net or fast.com to see what you're actually getting, then work through the fixes below in order — most people find one or two that make a real difference.

The reason speed drops isn't usually a mystery. Your router might be in a bad spot, your Wi-Fi channel might be crowded, background programs might be downloading updates, or your device might be too far from the router. These are all fixable without calling your provider or buying new equipment.

Key Takeaways

  • Move your router to a central, elevated location away from walls and metal objects, which can cut your speed by half or more.
  • Restart your modem and router by unplugging them for 30 seconds — this clears temporary slowdowns and takes two minutes.
  • Check what's running on your device: Windows Update, cloud backups, and streaming apps in the background can use most of your bandwidth.
  • Switch your Wi-Fi channel in your router settings if you live in an apartment or dense area, since overlapping channels from neighbors' networks slow you down.
  • Use a wired connection (Ethernet cable) for devices that need speed most, since Wi-Fi is always slower than a direct cable.

Restart your modem and router the right way

A restart clears the temporary memory your modem and router use to manage connections. After a few weeks of running, this memory fills up and slows everything down. The fix takes two minutes and works about 30 percent of the time.

Unplug your modem (the box that connects to your wall outlet and your provider's line) and wait 30 seconds. Plug it back in and wait for the lights to stop blinking and settle into a steady pattern — usually two to three minutes. Then unplug your router (the box that broadcasts Wi-Fi) and wait 30 seconds, then plug it back in. Wait another two to three minutes for it to fully restart. Run your speed test again.

Do this once a month to keep things running smoothly. If you restart and your speed doesn't improve, move to the next step.

Move your router to a better location

Wi-Fi travels in straight lines and bounces off hard surfaces. If your router sits in a corner, inside a cabinet, behind a TV, or on the floor, the signal has to travel through walls and obstacles to reach you. Moving it to the center of your home and up high — on a shelf or mounted on a wall — can double your speed.

Keep your router away from metal objects (filing cabinets, refrigerators, microwaves) and away from other wireless devices like cordless phones or baby monitors, which broadcast on the same frequency and create interference. A kitchen corner is usually the worst spot. A living room shelf or hallway wall is usually better.

If you live in a small space and can't move the router far, even moving it from the floor to a table makes a difference. Test your speed from the same spot where you normally use your device before and after the move to see if it helped.

Check what's using your bandwidth in the background

Windows Update, cloud backup services, streaming apps, and torrent clients can download gigabytes of data without you noticing. If your speed test shows slow speeds but your internet feels fine when you're browsing, something is running in the background.

On Windows: Open Task Manager (right-click the taskbar and select "Task Manager"). Click the "Performance" tab, then "Open Resource Monitor" at the bottom. Click the "Network" tab. Look at the "Processes with Network Activity" section — anything showing high numbers in the "Bytes Sent/Received" columns is using your bandwidth. Common culprits are OneDrive, Google Drive, Windows Update, and Spotify. Right-click the process and select "End Process" to stop it temporarily, or go to Settings > Apps > Startup to disable it from starting automatically.

On Mac: Open Activity Monitor (search for it in Spotlight). Click the "Network" tab. Look at the "Bytes Sent" and "Bytes Received" columns. Quit anything using significant bandwidth by selecting it and clicking the X button in the top left.

After closing background processes, run your speed test again. If it's much faster, you've found your problem.

Switch your Wi-Fi channel if you live near other networks

Wi-Fi channels are like radio stations. If your neighbors' routers are all broadcasting on the same channel as yours, you're all interfering with each other. This is especially common in apartments. Switching to a less crowded channel can improve speed noticeably.

Log into your router's settings by opening a web browser and typing 192.168.1.1 or 192.168.0.1 (check your router's label if neither works). The username and password are usually "admin" and "admin" or printed on the router itself. Look for a section called "Wireless" or "Wi-Fi Settings" and find the "Channel" dropdown.

For 2.4 GHz networks (the older, longer-range band), use channel 1, 6, or 11 — these don't overlap with each other. For 5 GHz networks (faster but shorter range), most channels don't overlap, so pick one in the middle of the list. Save your changes and restart your router. Run a speed test from the same spot to see if it improved.

If you're not comfortable logging into your router, ask your provider's support line to change the channel for you — they can do it remotely.

Use a wired connection for devices that need speed most

Wi-Fi is convenient but always slower than a direct cable connection. If you have a desktop computer, gaming console, or streaming device that stays in one place, plug it into your router with an Ethernet cable. This removes Wi-Fi interference and gives you the full speed your provider sends.

Ethernet cables are cheap (under $10 for a 25-foot cable) and work with any device that has an Ethernet port. If your device doesn't have a port, USB adapters exist but add complexity. For laptops and phones, a wired connection isn't practical, so keep those on Wi-Fi.

If you're far from your router and can't run a cable, a Wi-Fi extender or mesh system might help, but these are more expensive and usually slower than a cable. Try the cheaper fixes first.

Contact your provider if nothing changes

If you've restarted your equipment, moved your router, closed background processes, and switched channels, and your speed test still shows much less than what you're paying for, the problem is likely on your provider's side. Call their support line with your speed test results in front of you.

Providers sometimes throttle speeds during peak hours or have line problems in your area. They may also have you on an older plan that doesn't match your current package. Ask them to check your line quality and confirm what speed tier you're paying for. If the line has problems, they'll send a technician. If you're on an old plan, they might upgrade you at no extra cost.

Before you call, write down: your speed test results, the time of day you tested, what devices you tested on, and whether the problem happens all day or only at certain times. This information helps them diagnose faster.

Frequently Asked Questions

Why is my Wi-Fi slower than my wired connection?

Wi-Fi travels through air and walls, which slows it down and makes it less stable. A wired Ethernet connection goes directly from your router to your device with no obstacles. Wi-Fi is also shared among all your devices, while a wired connection is dedicated to one device. For devices that stay in one place, a cable is always faster.

How often should I restart my modem and router?

Once a month is a good routine to keep things running smoothly. If you notice speed dropping suddenly, restart before calling your provider. Some people set a calendar reminder on the first of each month.

Will a new router make my internet faster?

Only if your current router is very old (more than five years) or broken. A new router won't increase the speed your provider sends — it can only use what's already there. Try the fixes in this guide first. A new router makes sense if your current one is dropping connections or if you have a large home and Wi-Fi doesn't reach everywhere.

What's the difference between 2.4 GHz and 5 GHz Wi-Fi?

2.4 GHz travels farther through walls but is slower and more crowded (neighbors' networks interfere more). 5 GHz is faster but doesn't travel as far. Most modern routers broadcast both. Use 5 GHz for devices close to your router that need speed, and 2.4 GHz for devices far away or in other rooms.

Can I speed up my internet by changing my DNS?

Changing DNS (the service that translates website names into addresses) rarely makes a noticeable difference for most people. It's worth trying if nothing else worked — switch to Cloudflare (1.1.1.1) or Google (8.8.8.8) in your router settings — but don't expect dramatic improvement. The fixes above will help much more.