How fast is the Internet speed in San Francisco CA, US?

We believe that it's a conflict of interest when Internet service providers operate their own speed tests. A third party opinion is necessary and the provider shouldn't be allowed anywhere near the process. When providers host their own speed tests they eliminate the variables that you're here to test. Namely the Internet route itself. This test is unbiased, it tests and grades all providers on the same criteria. They want you to think your connection is running perfectly... but is it really?

San Francisco CA Speed Test

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Other speed tests, especially tests offered by your Internet provider try to eliminate routing factors. This can make your connection appear faster than it really is. Truthfully, do you want to know how fast your connection is within your providers network or do you want to know how fast it is to the locations where the websites you visit are being hosted? is not a best case scenario connection test and will test your Internet under real world conditions. [read more]

Top ISP Rank

1Sonic.net95.7 Mbps 82 Mbps 123 Mbps   190 clients took 774 tests recently
2AT&T U-verse92.5 Mbps 116 Mbps 65 Mbps   88 clients took 235 tests recently
3Comcast Cable48.7 Mbps 83 Mbps 8 Mbps   1085 clients took 7917 tests recently
4T-Mobile USA48.4 Mbps 67 Mbps 28 Mbps   581 clients took 27518 tests recently
5AT&T Wireless46.1 Mbps 51 Mbps 31 Mbps   109 clients took 2118 tests recently
6AT T Internet31.9 Mbps 33 Mbps 25 Mbps   84 clients took 417 tests recently
7Performive31.5 Mbps 42 Mbps 7 Mbps   42 clients took 228 tests recently
8Verizon19.2 Mbps 22 Mbps 13 Mbps   97 clients took 186 tests recently
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Do you want to research connection speed for San Francisco CA, US?'s Download Speed Test and Upload Speed Test log connection information to allow users to research real world Internet speed test results.'s speed test database stores information on millions of Internet connections. This tool can average connection speed for any Internet provider, country or city in the world. So you can easily average speed test results, compare maximum speeds, research logged results and find the fastest ISPs for San Francisco CA.

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