Run a speed test on Speedtest.net or Fast.com

The fastest way to check your internet speed is to visit Speedtest.net or Fast.com in any web browser, click the big button in the middle of the page, and wait 30 to 60 seconds. Both sites measure how fast data travels to and from your device, then show you three numbers: download speed, upload speed, and ping (the delay when sending data). You do not need to create an account or download anything.

Speedtest.net is run by Ookla, a company that has been measuring internet speeds since 2006. Fast.com is run by Netflix. Both are free and show roughly the same results. Pick whichever one loads faster on your device — if your internet is very slow, one site might respond quicker than the other.

Run the test when you are not downloading files, streaming video, or using video calls. Close other browser tabs and pause any background updates on your computer. These activities use bandwidth and will make your speed test results lower than your actual connection speed.

Understand what the numbers mean

Download speed is how fast data comes to your device. This is what matters most for watching video, browsing websites, and downloading files. Speed test results show this in megabits per second, written as Mbps. For example, 50 Mbps means 50 million bits of data arrive every second.

Upload speed is how fast data leaves your device. You need this for video calls, uploading photos to the cloud, or sending large email attachments. Upload speed is usually much lower than download speed — this is normal and expected.

Ping is the time it takes for your device to send a signal to a server and get a response back, measured in milliseconds. Lower ping is better. Ping matters most for online gaming and video calls. Anything under 100 ms is fine for most people. If your ping is above 150 ms, you might notice lag during video calls or games.

Key Takeaways

  • Visit Speedtest.net or Fast.com, click the button, and wait for results — no account or download required.
  • Close other browser tabs and pause downloads before testing so background activity does not lower your results.
  • Download speed matters most for streaming and browsing; upload speed matters for video calls and file uploads.
  • Ping under 100 milliseconds is normal; anything above 150 ms may cause noticeable delay in calls or games.
  • Run the test multiple times at different times of day to see if your speed changes, which can point to network congestion.

Test from different locations in your home

If you have Wi-Fi, your speed will vary depending on how far you are from the router and what walls are between you. Test your speed in the room where you use the internet most often — that result matters more than a test taken right next to the router. If you get a slow result, move closer to the router and test again. If the speed improves significantly, your Wi-Fi signal is weak in that area.

For the most accurate picture of your internet connection itself, plug an ethernet cable directly into your modem or router and test from a computer. This removes Wi-Fi from the equation. If your wired speed is much faster than your Wi-Fi speed, the problem is your Wi-Fi, not your internet service. If both are slow, contact your internet provider.

Run multiple tests to spot patterns

Internet speed changes throughout the day. Run a speed test in the morning, afternoon, and evening. If your speed is consistently slow at certain times, your internet provider's network is probably congested during those hours — many people are using the internet at once. If your speed is slow all day, every day, you may have a problem with your connection or your equipment.

Write down your results or take screenshots. If you need to contact your internet provider about slow speeds, they will ask what speeds you are getting and when. Having this information ready makes the conversation faster.

Check your speed against your plan

Your internet bill should list the speed you are paying for — usually written as "up to X Mbps." Your actual speed test results will almost always be lower than this number. Internet providers use "up to" because speeds vary based on network conditions, distance from their equipment, and the type of connection you have.

As a rough guide, you should get at least 80 percent of the speed you are paying for under normal conditions. If you are paying for 100 Mbps and consistently getting 20 Mbps, you have a real problem. If you are getting 75 to 80 Mbps, that is normal. If you are unsure what speed you are paying for, check your bill or log into your provider's website.

Troubleshoot if your speed is much slower than expected

Start with the simplest fix: restart your modem and router. Unplug both devices, wait 30 seconds, and plug them back in. Wait another two minutes for them to fully restart. Run a speed test again. This fixes slow speeds about half the time because it clears out temporary problems in the equipment.

If speed is still low, move your router to a central location in your home, away from walls and metal objects. Microwaves and cordless phones can interfere with Wi-Fi on the 2.4 GHz band. If you have a dual-band router, connect to the 5 GHz network instead — it is faster but does not travel as far through walls.

If you are using Wi-Fi and your speed is still slow after moving the router, try connecting with an ethernet cable. If the wired speed is normal but Wi-Fi is slow, your Wi-Fi needs adjustment, not your internet service. If both are slow, contact your internet provider and tell them your speed test results and the time you ran the test.

Use your phone or tablet to test as well

Speed test apps are available for iPhone and Android in the App Store and Google Play. Download the Speedtest app (by Ookla) or the Fast app (by Netflix) and run the test on your phone or tablet. Mobile devices often show different speeds than computers because they use different Wi-Fi or cellular connections.

If your phone gets fast speeds but your computer is slow, the problem is likely your computer or its Wi-Fi card, not your internet service. If both devices are slow, the problem is your Wi-Fi network or your internet connection.

Frequently Asked Questions

Why is my speed test result different each time I run it?

Internet speed changes based on network congestion, the distance to the test server, and what else is using your connection. Running the test multiple times and averaging the results gives you a better picture than a single test. If results vary wildly, you may have a connection stability problem — contact your provider.

Does it matter which speed test website I use?

Speedtest.net and Fast.com produce similar results for most people. Some providers have their own speed test tools, but independent sites like these two are more reliable because they do not have a reason to show inflated numbers. Stick with one site if you want to compare results over time.

What internet speed do I actually need?

For basic browsing and email, 10 to 25 Mbps is enough. For streaming video in HD, you need 5 to 10 Mbps per stream. For 4K video, 25 Mbps or higher. For video calls, 2.5 Mbps upload and download is the minimum, but 5 Mbps or higher is more comfortable. For online gaming, speed matters less than ping — anything above 50 Mbps is fine as long as ping is under 100 ms.

Should I test on Wi-Fi or with an ethernet cable?

Test on whatever connection you actually use most. If you use Wi-Fi, test on Wi-Fi. If you want to know your internet service's true speed, test with an ethernet cable plugged directly into the modem. This tells you whether slow speeds are caused by Wi-Fi or by your internet service itself.

Can I trust the speed test result if other people are using my internet?

No. Ask everyone in your home to stop using the internet, close video calls and streaming apps, and pause downloads. Then run the test. If you cannot get everyone offline, run the test late at night or early morning when usage is lowest, and note the time so you can compare results fairly.