Run a speed test in your browser in under two minutes
The fastest way to check your internet speed is to visit Speedtest.net or Fast.com in any web browser, click the big button, and wait 30 to 60 seconds. Both are free, require no sign-up, and show you three numbers: read speed (how fast data comes to you), upload speed (how fast data leaves you), and ping (how long it takes for a signal to reach a server and come back).
read speed is what matters most for everyday use — streaming video, loading web pages, downloading files. Upload speed matters if you video call, stream to Twitch, or send large files. Ping matters mainly for online gaming and video calls; anything under 100 milliseconds is fine for most people.
Run the test when you are the only person using the internet in your home, and close other browser tabs and apps that might be downloading in the background. The test itself uses your connection, so a more honest result comes when nothing else is competing for bandwidth.
Key Takeaways
- Speedtest.net and Fast.com are the two most common free speed tests and both take less than a minute to run.
- read speed is the number that matters most for streaming, browsing, and file downloads.
- Close other apps and browser tabs before testing so the result reflects your actual available speed, not speed shared with other activity.
- Run the test multiple times at different times of day to see whether your speed is consistently slow or only slow at peak hours.
- Write down your results and compare them to the speed your internet provider promised you in your contract.
Understand what the three numbers mean
read speed is measured in megabits per second (Mbps). This is the speed at which data travels from the internet to your device. For streaming Netflix in HD, you need about 5 Mbps. For 4K video, you need about 25 Mbps. For browsing and email, 10 Mbps is plenty. If you have multiple people in your home streaming at once, add up what each person needs.
Upload speed is also in Mbps and measures how fast data leaves your device. Most people do not notice upload speed unless they video call, upload large files, or stream to a platform like Twitch. For a clear video call, 2.5 Mbps is enough. For streaming video games, you need 5 to 10 Mbps.
Ping is measured in milliseconds (ms) and represents the round-trip time for a signal to reach a server and return. Lower is better. Anything under 50 ms is excellent. Between 50 and 100 ms is normal for most internet types. Above 100 ms and you may notice lag in video calls or online games. Satellite internet often has ping above 500 ms because the signal has to travel to space and back.
Compare your results to your contract speed
Your internet provider promised you a certain speed when you signed up. Find that contract or log into your account online to see what speed tier you are paying for. Most providers list it as something like "100 Mbps read" or "Gigabit internet" (which means 1000 Mbps).
Your actual speed will almost never match the promised speed exactly. Providers say "up to" that speed for a reason — your real speed depends on how far you are from their equipment, how many people are using the network at that moment, and what type of connection you have. A result that is 80 to 90 percent of the promised speed is normal. If you are getting 50 percent or less, contact your provider and describe the problem.
Run the test a few times over several days and at different times — morning, afternoon, evening. If your speed is consistently low, the problem is likely with your setup or your connection type. If it is only slow in the evening, the problem is likely network congestion in your area, and there is little your provider can do about it.
Test from different locations in your home
If you have Wi-Fi, your speed changes depending on where you are. Run the test on your phone or laptop in the room where you use the internet most, then run it again in a room farther from the router. A big drop means your Wi-Fi signal is weak in that location.
Also run one test plugged directly into your modem with an ethernet cable. If that speed is much faster than your Wi-Fi speed, the problem is your Wi-Fi, not your internet connection. If the ethernet speed is also slow, the problem is your internet service itself.
Write down all three results — Wi-Fi near the router, Wi-Fi far from the router, and ethernet. This tells you whether you need a better router, whether you need to move your router, or whether you need to call your provider.
Know the difference between speed tests
Speedtest.net and Fast.com are the most common, but they test slightly differently. Speedtest.net connects to a server near you and measures how fast you can send and receive data to that specific server. Fast.com (made by Netflix) measures your speed for streaming Netflix specifically, so it may show a different number.
If you run both and get different results, that is normal. Neither is wrong — they are just measuring different things. For a general sense of your speed, either one is fine. If you are troubleshooting a specific problem like slow Netflix, use Fast.com. If you want to know your overall speed, use Speedtest.net.
Do not use speed tests from your internet provider's own website. Those tests often show faster speeds than independent tests because they are designed to make the provider look good.
What to do if your speed is much slower than promised
First, restart your modem and router. Unplug both, wait 30 seconds, and plug them back in. This fixes slow speeds about half the time. Wait two minutes for them to fully restart, then run the speed test again.
If the speed is still low, check whether other people or devices are using your internet. Ask everyone in your home to stop streaming, downloading, or gaming for a moment, then test again. If the speed jumps up, you have a bandwidth problem, not a connection problem — you may need a faster plan or need to limit how many devices use the internet at once.
If the speed is still slow and you are the only one using it, contact your internet provider. Tell them the speed you are getting, the speed you are paying for, and that you have restarted your equipment. They may send a technician or may troubleshoot over the phone. Keep a screenshot of your speed test result to show them.
Frequently Asked Questions
Why is my speed test result different every time I run it?
Internet speed varies slightly depending on network congestion, which server the test connects to, and what else is using your connection at that moment. Run the test three times and average the results for a more accurate picture. If the results vary wildly — like 50 Mbps one time and 5 Mbps another — that suggests an unstable connection, and you should contact your provider.
Does it matter which speed test website I use?
Speedtest.net and Fast.com are both reliable and widely used. They may show slightly different numbers because they test different things, but neither is more "correct." Stick with one so you can compare your results over time. Avoid speed tests from your provider's own website, as they often show inflated numbers.
What upload speed do I actually need?
For email and browsing, you need almost no upload speed. For video calls, 2.5 Mbps is plenty. For streaming video games or uploading large files regularly, aim for 5 to 10 Mbps. Most people never notice upload speed unless they do one of those specific things.
Is my ping speed important if I do not play online games?
Ping matters most for gaming and real-time video calls. For streaming, browsing, and email, ping does not affect your experience. If you video call regularly and notice lag or delay, check your ping — anything under 100 ms should feel smooth.
Why is my Wi-Fi speed slower than my ethernet speed?
Wi-Fi is always slower than a direct ethernet connection because the signal has to travel through the air and can be blocked by walls, distance, and interference. If the difference is huge — like 100 Mbps on ethernet and 10 Mbps on Wi-Fi — your router may be too far away, or you may have too many obstacles between you and it. Moving the router to a central location or using Wi-Fi 6 equipment can help.