What counts as slow depends on what you do

Internet speed matters only for the things you actually do. If you browse websites and check email, you need about 5 to 10 megabits per second (Mbps). If you stream video in standard definition, 5 Mbps works. If you stream in high definition or video call, you need 15 to 25 Mbps. If multiple people in your house do different things at once — one person streaming, one person working from home, one person gaming — you need 50 Mbps or more.

The speed your internet provider advertises is the maximum your connection can reach under perfect conditions. Real-world speed is usually lower because of distance from the equipment, interference, network congestion, and the devices you are using. A connection advertised as 100 Mbps might deliver 60 to 80 Mbps on a typical day.

Before you decide your internet is slow, measure what you actually get and compare it to what you actually need. A 25 Mbps connection is not slow if you live alone and browse the web. The same connection is slow if four people are trying to work from home at once.

Key Takeaways

  • Test your speed using a free tool like Speedtest.net or Fast.com, and run the test multiple times at different times of day to see the real range.
  • Compare your measured speed to your actual needs: streaming video needs 15 to 25 Mbps, video calls need 2.5 to 4 Mbps per person, and gaming needs 5 to 20 Mbps depending on the game.
  • Slow speed can come from your device, your router, interference from other devices, or congestion on your provider's network — not always from your plan.
  • If your measured speed is much lower than what your provider advertises, restart your modem and router, move closer to the router, or contact your provider to check the line.

How to measure your actual speed

Go to Speedtest.net or Fast.com in a web browser on a computer or phone connected to your home wifi. Click the button to start the test. The tool will measure how fast data travels to your device (read speed) and from your device (upload speed). read speed is what matters most for streaming and browsing. Upload speed matters if you video call, upload files, or stream yourself.

Run the test at least three times — once in the morning, once in the afternoon, and once in the evening. Internet speed changes throughout the day because more people use the network at certain times. If you get 80 Mbps in the morning and 40 Mbps at night, your connection is congested during peak hours, not broken.

Run one test while sitting next to your router and one from the farthest room in your house. If the speed drops significantly when you move away, your router is the problem, not your internet plan. If the speed stays about the same, the issue is with your provider's connection or your modem.

When your device or router is the bottleneck

Your wifi router can be slower than your internet connection. A router from 2015 might advertise 300 Mbps, but a modern router can handle 1000 Mbps or more. If your measured speed is much lower near the router than far from it, or if speed drops when you move to a different room, your router is limiting you.

Older devices can also be the problem. A phone from 2012 or a laptop from 2010 may not support the newest wifi standards and will measure slower speeds even if your connection is fast. If you test on a newer device and get faster speeds, your old device is the limiting factor.

Restart your modem and router before you assume they are broken. Unplug both devices, wait 30 seconds, plug in the modem first, wait for it to fully restart (usually 2 to 3 minutes), then plug in the router and wait another 2 to 3 minutes. This clears temporary problems that slow down your connection.

Interference and congestion on your network

Wifi travels through walls and air, and other devices can interfere. Microwaves, cordless phones, baby monitors, and neighboring wifi networks all use the same frequencies as your router. If your router is in the kitchen next to the microwave, or in a closet surrounded by walls, your speed will drop.

Move your router to a central location in your house, away from the microwave and other electronics. Place it on a shelf or table rather than on the floor or inside a cabinet. If you have a dual-band router (most modern ones do), connect devices that need speed to the 5 GHz band instead of the 2.4 GHz band. The 5 GHz band is faster but does not travel as far through walls.

Too many devices connected at once can also slow everything down. If you have 20 devices on your wifi — phones, tablets, smart speakers, security cameras, smart lights — and they are all active, your router has to split its attention. Disconnect devices you are not using, or move some to a wired connection if possible.

When your provider's network is congested

If your measured speed is much lower than what your provider advertises, and the problem happens at the same time every day, your provider's network is congested. This is common in the evening between 7 p.m. and 10 p.m. when many people are streaming video. It is also common in neighborhoods where many people use the same equipment.

Contact your provider and tell them your measured speed. Have your test results ready — most providers ask for a screenshot or the exact numbers. Ask them to check the line from the street to your house and to check whether your neighborhood's equipment is at capacity. Some providers can upgrade the equipment in your area or move you to a less congested segment.

If your provider says the line is fine but speed is still low, ask whether they offer a faster plan. Sometimes upgrading from 100 Mbps to 300 Mbps puts you on newer equipment that is less congested. This is not always true, but it is worth asking.

Problems that are not about speed

Sometimes the problem feels like slow internet but is actually something else. If websites load slowly but your speed test shows 100 Mbps, the website itself might be slow or far away. If video calls drop or freeze, the problem might be your device running out of memory, not your internet speed. If one website is slow but others are fast, your internet provider might be throttling that specific service, or the website might be having problems.

If your internet cuts out completely for a few seconds at a time, that is a connection stability problem, not a speed problem. Restart your modem and router. If it keeps happening, contact your provider — the line might have a fault.

Frequently Asked Questions

What internet speed do I need for Netflix?

Netflix recommends 3 Mbps for standard definition, 5 Mbps for high definition, and 15 Mbps for 4K. If you are streaming on one device, 5 to 10 Mbps is enough for HD. If two or more people are streaming at once, add 5 Mbps for each additional stream.

Is 50 Mbps fast enough for a family of four?

Yes, if one person is streaming video, one is video calling, and one is browsing. If all four people are streaming video at the same time, 50 Mbps will feel slow. Test what you actually do at the same time and measure your speed during those moments.

Why is my speed test fast but websites load slowly?

Speed tests measure the connection between you and the test server, which is usually very close. Websites are hosted far away, and the path your data takes to reach them can be slower. This is not a problem with your internet speed — it is how the internet works.

Should I use wifi or a wired connection for speed tests?

Test both. Run one test on wifi and one with an ethernet cable plugged directly into your modem. If the wired test is much faster, your wifi router is the problem. If both are about the same, your internet plan is the limiting factor.

How often should I test my internet speed?

Test once a month to watch for trends, or test whenever you notice problems. If you are considering upgrading your plan, test for a week at different times of day to see the real range you get.