What actually slows down your internet

Your internet speed depends on three separate things, and fixing one won't help if the others are broken. Your internet service provider (ISP) — the company you pay for internet — delivers a certain speed to your home. Your router — the box that broadcasts that signal wirelessly — can slow it down if it's old or placed badly. And the devices using the internet can bog down the connection if too many are running at once or if they have malware.

Most people blame their ISP first, but the ISP is usually not the problem. A router placed in a closet, a device downloading updates in the background, or a neighbor's network interfering with yours will make everything feel slow even though your ISP is delivering what you paid for. You can test what speed you're actually getting by visiting speedtest.net on a wired connection — plug an ethernet cable directly into your router and computer. That number is what your ISP is delivering. If it matches what you're paying for, your ISP is fine.

Key Takeaways

  • Test your actual speed with a wired ethernet connection at speedtest.net to see whether your ISP is the problem or something else is slowing you down.
  • Move your router to an open, central location in your home — not a closet or cabinet — and keep it away from microwaves and cordless phones.
  • Restart your router by unplugging it for 30 seconds, then plugging it back in; this clears out memory buildup that slows connections over time.
  • Close background programs and browser tabs, disable automatic updates during work hours, and check whether malware is running on your device.
  • If your router is more than five years old or you're getting half the speed you pay for, contact your ISP about upgrading to a newer model.

Move and restart your router

A router broadcasts a wireless signal in all directions, but walls, metal, and water block that signal. If your router sits in a back bedroom or inside a cabinet, the signal has to travel through obstacles to reach you. Move it to a central, open location — ideally on a shelf or table in the middle of your home, not hidden away. Higher placement works better than lower placement because the signal spreads downward.

Keep your router away from microwaves, cordless phones, and baby monitors. These devices use the same wireless frequency (2.4 GHz) that most routers use, and they interfere with each other. If you have a newer router that supports 5 GHz, that frequency has less interference but shorter range, so it works better for devices close to the router.

Restart your router once a month by unplugging it for 30 seconds, then plugging it back in. Over time, routers build up memory that slows them down. A restart clears that out. This is the single most effective thing most people can do, and it costs nothing.

Close programs and check for malware

Every program running on your device uses some of your internet bandwidth. If you have 20 browser tabs open, a cloud backup running, a video call in the background, and automatic updates downloading, your available speed drops sharply. Close browser tabs you're not using. Check your taskbar or Activity Monitor (on Mac) or Task Manager (on Windows) to see what's running. Pause cloud backups like OneDrive or Google Drive during work hours — they can wait until evening.

Disable automatic updates during the day. On Windows, go to Settings > Update & Security > Windows Update and click "Change active hours" to tell Windows when you're working. On Mac, go to System Settings > General > Software Update and uncheck "Automatic updates." Updates will still happen, just on your schedule instead of interrupting you.

Malware can use your internet connection to send data or read files without your knowledge. Run a malware scan using Windows Defender (built into Windows) or Malwarebytes (free version available). Restart your device after the scan completes.

Check how many devices are connected

Every device connected to your wifi — phones, tablets, smart speakers, security cameras, smart thermostats — shares your bandwidth. If you have ten devices connected and five of them are actively using the internet, each one gets roughly one-fifth of your available speed. Disconnect devices you're not using. On your router's admin page (usually found by typing 192.168.1.1 into a browser), you can see what's connected and remove anything you don't recognize.

If someone else is using your wifi heavily — streaming video, downloading large files, or gaming — that will slow down everyone else's connection. Ask them to pause what they're doing, or set up a separate guest network for visitors so their activity doesn't affect your main devices.

Upgrade your router if it's old

A router typically lasts four to six years before it starts slowing down noticeably. If your router is older than that, or if you're getting consistently half the speed you pay for even after moving it and restarting it, a new router will likely help. You don't need an expensive one — a mid-range router from TP-Link, ASUS, or Netgear costs $50 to $100 and will be much faster than an old one.

When you buy a new router, you can usually set it up yourself in 10 minutes: plug it in, connect to its wifi network, and follow the setup wizard. Your ISP may also offer a newer router if you call them — some include it free or for a small monthly fee. Ask whether they'll swap out your old one.

Contact your ISP about your plan

If you've done all of the above and you're still getting much slower speeds than what you're paying for, contact your ISP. Tell them the speed you're getting (from speedtest.net), the speed you're paying for, and that you've restarted your router and tested with a wired connection. They can run a line test from their end to see whether the problem is in their network or in your home wiring.

If the problem is on their end, they'll fix it. If the problem is in your home, they may send a technician or recommend upgrading your plan. Some areas have only one ISP available, but if you have choices, you can compare speeds and prices with competitors. Speeds vary by neighborhood and by how far you are from the ISP's equipment, so what's available to you depends on your address.

Understand what speed you actually need

Internet speed is measured in megabits per second (Mbps). For basic tasks — email, web browsing, video calls — you need about 5 to 10 Mbps. For streaming video in HD, you need about 15 to 25 Mbps. For 4K video or multiple people streaming at once, you need 50 Mbps or higher. Gaming needs low latency (measured in milliseconds) more than it needs high speed, so a fast connection doesn't automatically make games run better.

If you're paying for 100 Mbps but only getting 50 Mbps, that's a real problem. If you're paying for 50 Mbps and getting 45 Mbps, that's normal — you'll never get exactly what you pay for because of overhead in the network. If you're paying for 100 Mbps and getting 100 Mbps but everything still feels slow, the problem is probably that you're trying to do too much at once on too many devices.

Frequently Asked Questions

Why is my wifi slow but my wired connection is fast?

Your router is the problem. Move it to a more central location, away from obstacles and interference. If it's more than five years old, consider replacing it. Restarting it may also help. If the wired connection is also slow, the problem is your ISP or your home wiring, not the router.

Does restarting my router really make a difference?

Yes. Routers build up memory over weeks or months, which slows them down. Unplugging for 30 seconds clears that memory. Most people notice a speed improvement after restarting, especially if they haven't restarted in several months. Do it once a month to keep performance steady.

What's the difference between 2.4 GHz and 5 GHz wifi?

2.4 GHz has longer range but more interference from other devices like microwaves. 5 GHz has shorter range but less interference and faster speeds. If your router supports both, use 5 GHz for devices close to the router and 2.4 GHz for devices farther away.

Can I get faster internet by changing my router settings?

Minor tweaks can help — moving to 5 GHz, changing the wifi channel to avoid interference, or updating the router's firmware. But these usually give small improvements. Moving the router and restarting it will help much more than changing settings.

Should I pay for a faster internet plan?

Only if you've confirmed you're actually getting the speed you're paying for and it's still not enough for what you do. Test with speedtest.net on a wired connection first. If you're getting what you pay for but it's slow, a faster plan will help. If you're not getting what you pay for, call your ISP before upgrading.