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Understanding Your Line Quality
We give each test result a grade to help you interpret the overall quality. We also show the specific packet loss, ping and jitter values that make up your grade. When we are unable to measure one or more of them you will see a grade of N/A. Certain firewall configurations, Java not being installed or other technical issues can cause this, but it is possible that simply testing again will fix the problem. Feel free to test often, and read on to learn more!
A An excellent result! Expect all Internet applications to work very well assuming you have sufficient bandwidth. Use Speedtest.net to see. MOS greater than 4.37 (Example - a ping below 50 ms with 0% packet loss)
B
Very good! Your connection should work well for any Internet application. Some online games may not perform optimally. MOS between 4.28 and 4.37 (Example - a ping around 90 ms with 0% packet loss)
C Acceptable. Your VoIP quality will suffer some, and you will have a disadvantage in many online games. Most streaming media will be fine. You should try testing again to another server close to you. MOS between 4.00 and 4.27 (Example - a ping around 150 ms with 1% packet loss)
D Concerning. Most online applications will not perform well but should function in some capacity. Try testing to other servers to verify the result. You might need to contact your ISP for help. MOS between 2.50 and 3.99 (Example - a ping around 300 ms with 3% packet loss)
F Very poor. Real-time Internet application performance will suffer greatly on such a connection. Test to other servers to confirm the result, but definitely talk to your ISP about troubleshooting the issue. MOS lower than 2.50 (Example - a ping above 500 ms with 20% packet loss)
Packet Loss
Much as it sounds, if you have anything less than complete success in transmitting and receiving "packets" of data then you are experiencing this problem with your Internet connection. It can mean much slower download and upload speeds, poor quality VoIP audio, pauses with streaming media and what seems like time warping in games -- your connection may even come to a total standstill! Packet loss is a metric where anything greater than 0% should cause concern.
Ping
This measurement tells how long it takes a "packet" of data to travel from your computer to a server on the Internet and back. Whenever you experience delayed responses in Internet applications - this would be due to a higher than desired ping. Similar to packet loss, lower is better when it comes to ping. A result below 100 ms should be expected from any decent broadband connection.
Jitter
Once you understand ping, jitter should also make sense. Jitter is merely the variance in measuring successive ping tests. Zero jitter means the results were exactly the same every time, and anything above zero is the amount by which they varied. Like the other quality measurements, a lower jitter value is better. And while some jitter should be expected over the Internet, having it be a small fraction of the ping result is ideal.
The Global Broadband Speed Test
Speedtest.net is a broadband speed analysis tool that allows anyone to test their Internet connection. Ookla provides this service for free to anyone curious about the performance of their connection to and from hundreds of locations around the world. Whether you test just for fun or you really need to certify and validate the true speed of your Internet connectivity, Speedtest.net is the plac e to be. You can view all of your historical results, share them easily, and even compare them to others in your immediate area or around the globe.
Speedtest.net technology is used to perform over one million tests every day, making it the world-wide standard in bandwidth testing. Speedtest.net is owned and operated by Ookla, a team of technology veterans who believe the Internet should always be an open network for the exchange of ideas and information across town and or around the globe.
Speedtest.net itself experiences over twenty million tests every month providing unparalleled global broadband statistics. At no cost, anyone can use our World Results section to browse top bandwidth speed by country, or narrow down statistics to very specific locations.
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