Check your speed with a free online tool
The fastest way to measure your internet speed is to run a speed test on your computer or phone using a free website. Open a browser, go to speedtest.net, fast.com, or speedtest.googlefiber.net, and click the button to start. The test takes about 30 seconds and shows you three numbers: read speed (how fast data comes to you), upload speed (how fast you send data out), and ping (how long it takes for a signal to reach a server and come back).
Each of these tools works the same way — they send data to a server and measure how long it takes — but they may show slightly different results because they use different servers in different locations. If one result seems wrong, run the test again on a different tool. The results should be within 10 to 20 percent of each other.
Run the test at different times of day. Internet speed often drops in the evening when more people in your neighborhood are online. If you test at 2 p.m. and get 100 Mbps, but test at 7 p.m. and get 40 Mbps, that variation is normal and tells you something real about your connection.
Key Takeaways
- Speed test websites like speedtest.net and fast.com measure your actual read, upload, and ping in about 30 seconds and are free to use.
- Different speed test tools may show different results because they use different servers, so running the test twice helps you see the real range.
- Test at different times of day — morning, afternoon, and evening — because your speed usually drops when more people are using the network.
- Your internet provider's advertised speed is a maximum, not a may provide, so your actual speed will often be lower.
- Slow speeds can come from your router placement, too many devices connected, or problems with your provider's service in your area.
Understand what the numbers mean for your household
read speed is what matters most for everyday use. It determines how fast websites load, how smoothly videos play, and how quickly files read. Most households need 25 to 100 Mbps depending on how many people are online at once and what they are doing. If one person is streaming video in 4K while someone else is on a video call and a third person is downloading files, you need more speed than if only one person is online.
Upload speed matters if you work from home, attend video calls, or upload large files. Most people need 5 to 10 Mbps for video calls and remote work. If your upload speed is below 5 Mbps, video calls may freeze or drop, and uploading files will be slow.
Ping (measured in milliseconds, or ms) matters mainly for online gaming and video calls. A ping under 50 ms is good for most uses. A ping over 100 ms can cause noticeable lag in games or slight delays in video calls. Ping is less important than speed for regular browsing.
Compare your results to what your provider promised
Look at your internet bill or your provider's website to find the speed tier you are paying for. Most providers advertise speeds like "up to 100 Mbps" or "up to 300 Mbps." That "up to" is important — it means that is the maximum speed under ideal conditions, not what you will get all the time.
Your actual speed will usually be 80 to 95 percent of the advertised speed if your equipment is working well and you are close to the router. If you are getting less than 80 percent of what you are paying for, contact your provider and ask them to check your line. They can run a test from their end and tell you whether the problem is on their side or yours.
Write down your test results and the date. If you need to call your provider about slow speeds, having a record of multiple tests over time makes it harder for them to dismiss the problem.
Test from different locations in your home
Your speed will be faster near the router and slower farther away, especially if walls or floors are between you and the router. Test your speed in the room where you spend the most time online — your bedroom, home office, or living room — not just next to the router. That tells you the real speed you will experience day to day.
If the speed drops significantly in certain rooms, your router placement may be the problem. Routers work best when they are in a central, elevated location away from walls and metal objects. If your router is in a closet or behind a filing cabinet, moving it to an open shelf in the middle of your home can improve speed in distant rooms.
If speed is slow everywhere in your home, the problem is likely with your internet connection itself, not the router. If speed is fast near the router but slow in one room, the problem is likely WiFi range or interference.
Check whether other devices are slowing you down
Before you test, close programs that use the internet on your computer or phone. Streaming video, downloading files, or running updates in the background will lower your speed test results and give you a false reading. Close your email, web browsers, and any cloud storage apps. On your phone, turn off background app refresh if possible.
Also check how many devices are connected to your WiFi. If you have a smart TV, security cameras, smart speakers, and phones all connected at once, they are all sharing your bandwidth even if they are not actively downloading anything. Disconnect devices you are not using before you test, or test on a wired connection if your computer has an ethernet port. A wired connection bypasses WiFi and shows you the true speed of your internet line.
If your speed is good on a wired connection but poor on WiFi, your router is the bottleneck, not your internet service. If your speed is poor on both wired and WiFi, the problem is with your internet provider's service.
Know when to contact your provider
Contact your internet provider if your speed is consistently below 80 percent of what you are paying for, or if your speed has dropped suddenly. Have your speed test results ready and tell them the specific numbers you are seeing. Ask them to run a line test from their equipment to see if the problem is on their side.
Providers sometimes have outages or maintenance that affect speed in your area. They may also throttle (intentionally slow down) your connection if you have used a very large amount of data in a month, though this is less common now. Ask whether either of these is happening.
If your provider says your speed is normal and you disagree, ask to speak with a technical support supervisor. Document the dates and times of your tests, the speeds you got, and the names of anyone you spoke with. If the problem persists, you may be able to file a complaint with your state's public utilities commission, though the process and rules vary by state.
Frequently Asked Questions
Why do I get different speeds each time I test?
Speed varies because other people and devices on your network are using bandwidth, your internet provider's network is busier at certain times, and the speed test server you connect to may be farther away. Testing multiple times over several days gives you a more accurate picture than a single test.
Is my speed slow because of my router or my internet provider?
Test on a wired connection (ethernet cable plugged directly into your modem) if possible. If the wired speed is good but WiFi is slow, your router is the problem. If both are slow, your internet service is the problem.
What speed do I need for streaming video?
Netflix recommends 5 Mbps for HD video and 25 Mbps for 4K. YouTube recommends 2.5 Mbps for HD. If you are streaming on multiple devices at once, add those speeds together — two people watching HD video at the same time need about 10 Mbps.
Can I trust the speed my router shows me?
No. Your router's speed display shows the connection between your device and the router, not the speed of your actual internet connection. Always use a speed test website to measure your real internet speed.
Should I upgrade my internet plan if my speed is slow?
Not necessarily. First, test from different locations, disconnect other devices, and check whether your router is in a good location. If your speed is still below 80 percent of what you are paying for, contact your provider before upgrading. You may be able to fix the problem without paying more.