Run a speed test on any device connected to your network
The fastest way to check your internet speed is to visit a speed test website on any device — phone, laptop, or tablet — that connects to your home Wi-Fi or ethernet. Open a web browser and go to Speedtest.net, Fast.com, or Google speed test (type "speed test" into Google's search box). Each site runs the same basic test: it downloads a file from a server near you, uploads a file back, and measures how long both take. The whole process takes 30 to 60 seconds.
The results show three numbers. read speed is what matters most for everyday use — it's how fast data comes to your device when you browse, stream, or read files. Upload speed is how fast data leaves your device, which matters if you video call, upload photos, or work from home. Ping (measured in milliseconds) is how long it takes your device to reach the server and back; lower ping means less delay in games or video calls. Write down all three numbers so you can compare them over time or against what your internet provider promised.
Key Takeaways
- Speed test websites like Speedtest.net and Fast.com measure read, upload, and ping in under a minute on any internet-connected device.
- read speed is the number that affects most daily tasks like streaming and web browsing; upload speed matters mainly for video calls and file uploads.
- Test from the same location each time and close other apps before testing, because background downloads and streaming will lower your numbers.
- Compare your results to the speed your internet provider promised in your contract to see if you are getting what you pay for.
- If speeds are much lower than promised, restart your router, move closer to it, or test again at a different time before contacting your provider.
Close other apps and programs before you test
Speed test results are only accurate if nothing else is using your internet while the test runs. Before you start, close streaming apps like Netflix or YouTube, pause any downloads, and quit video call software. On your phone, swipe up from the bottom (iPhone) or down from the top (Android) to close background apps. On a computer, check the taskbar or menu bar for anything that might be using the network — email, cloud storage, or game launchers often sync in the background without you noticing.
The test itself uses very little data, so you do not need to worry about it counting against a data cap. However, if someone else in your home is streaming or downloading while you test, their activity will slow down your results. Ask them to pause for a minute, or test at a time when nobody else is online. This gives you an honest picture of what speed you actually get when one device is using the network.
Test from the same spot each time for consistent results
Wi-Fi speed varies depending on how far you are from your router and what walls or objects are between you and it. If you test in your bedroom one day and your kitchen the next, the numbers will be different — not because your internet changed, but because the signal strength changed. Pick one location, like the room where your router sits or where you usually work, and test from there every time. This way you can actually tell if your speed is getting slower over weeks or months.
If you want to know your true internet speed (what your provider actually delivers), test using an ethernet cable plugged directly into your router instead of Wi-Fi. Ethernet removes the variable of Wi-Fi signal strength and shows you the maximum speed your connection can reach. If your Wi-Fi speed is much lower than your ethernet speed, the problem is your Wi-Fi setup, not your internet service. If both are low, the problem is your internet provider or your modem.
Understand what the numbers mean for what you do
read speeds of 25 Mbps or higher work for most household tasks: browsing, email, and streaming one video at a time. If you stream 4K video or have multiple people streaming at once, you want 50 Mbps or more. Upload speed matters less for most people — 5 to 10 Mbps is enough for video calls and uploading photos — but if you work from home and upload large files regularly, you want 10 Mbps or higher. Ping below 100 milliseconds is fine for everything except competitive online games, which feel smoother with ping below 50.
Compare your actual results to what your internet provider promised in your contract or on their website. Most providers list a speed like "up to 100 Mbps" — the word "up to" matters, because you may not always reach that maximum. However, if you consistently get less than 80 percent of the promised speed, contact your provider and ask them to check your line. They may need to restart your modem remotely, send a technician, or acknowledge that the service in your area is slower than advertised.
Restart your router if speeds are lower than expected
If your speed test shows much lower numbers than usual, restart your router before assuming the problem is with your internet service. Unplug the router from power, wait 30 seconds, and plug it back in. Wait two to three minutes for it to fully restart — you will see lights on the front stop blinking and settle into a steady pattern. Then run the speed test again. A restart clears the router's memory and often fixes temporary slowdowns caused by too many devices connected or the router overheating.
If the speed is still low, try moving your device closer to the router or testing with an ethernet cable. If speed improves when you move closer, your Wi-Fi signal is weak and you may need to reposition the router, add a Wi-Fi extender, or upgrade to a newer router. If speed stays low even with ethernet, the problem is your internet service itself, and you should contact your provider with your speed test results as proof.
Test at different times to spot patterns
Internet speed often changes throughout the day. Many neighborhoods share the same internet lines, so speeds drop during evening hours when more people are online. Run your speed test at different times — morning, afternoon, and evening — over a few days. If speeds are consistently low at certain times, that is normal network congestion, not a problem with your service. If speeds are always low no matter what time you test, that suggests an issue with your modem, router, or internet service.
Keep a straightforward record of your results: the date, time, read speed, upload speed, and ping. After a week or two, you will see whether your speeds are stable, getting worse, or varying by time of day. This record is also useful if you need to contact your provider — they will ask when the problem started and what speeds you are seeing, and your notes give them concrete information to work with.
Frequently Asked Questions
What speed test website should I use?
Speedtest.net, Fast.com, and Google's built-in speed test all measure the same thing and give similar results. Fast.com is the simplest — it starts testing automatically when you load the page. Speedtest.net shows more detail and lets you test to different servers. Pick whichever you find easiest to use and stick with it so your results are comparable over time.
Why is my Wi-Fi speed much slower than my ethernet speed?
Wi-Fi signal weakens as you move away from the router and when walls or metal objects block the signal. Ethernet connects directly to the router with a cable, so it always gets the full speed your internet service provides. If ethernet speed matches your provider's promise but Wi-Fi is much slower, move your router to a central location, away from walls, or consider upgrading to a newer router with stronger Wi-Fi.
Does running a speed test use up my data cap?
A single speed test uses only a few megabytes of data — roughly 50 to 100 MB depending on the test site. Even if you test multiple times a day, you will not notice it on a typical data cap. However, if you have a very low cap (under 100 GB per month), running tests daily could add up over time.
Should I test on my phone or my computer?
Either works, but results may differ slightly because phones and computers have different Wi-Fi hardware. For the most consistent results over time, test on the same device from the same location. If you want to know your true internet speed, test on a computer connected with an ethernet cable, because that removes variables from Wi-Fi hardware.
What should I do if my speed is much lower than what I pay for?
First, restart your router and test again. Then test with an ethernet cable to rule out Wi-Fi problems. If speeds are still low, run the test a few times at different times of day — speeds vary with network congestion. If results stay well below what your provider promised, contact them with your speed test results and ask them to check your line or modem.