Test Your Internet Connection Speed

Your line speed:

Kbps

K bytes/sec

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Speed Test Thermometer

Off the chart!

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 2Mbps

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 1.5Mbps

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T-1

 

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 1Mbps

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500Kbps

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200Kbps

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100Kbps

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ISDN

60Kbps

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ISDN

40Kbps

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56K

20Kbps

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Whether you are using a wireless connection, an asymmetric digital subscriber line (ADSL), digital subscriber line (DSL), integrated services digital network (ISDN) connection, a cable modem, or just  a plain old dial-up modem, the Bandwidth Speed Test will give you the answer.

To calculate your connect speed we need to send a     large amount of data to your computer. Your computer has already started. When it's done, the       results will be displayed in the box above
 and in the Speed Test Thermometer below.

To re-run the speed test hold down your   ctrl key and click the refresh button in
your browser.

 

Questions & Answers:

How does this page calculate my connection speed?

Why do I get different speed results each time I run the Bandwidth Speed Test?


 

 

 

 

How does this page calculate my connection speed?

Actually, this isn't just one Web page, it's two Web pages, each with a hidden data file in the header area of the page. When either of these pages loads, it notes the time just before and just after the data file loads, then uses this information and the size of the data file to calculate the rate at which the data arrived at your computer.

When the first of these two pages was loaded, it did a rough calculation using a small data file to provide an estimate of how long it will take the second page, with its much larger data file, to download. The second page, with its larger data file, allowed the second page to calculate more accurate figures for the Your Speed: box and Speed Test Thermometer above.

Why do I get different speed results each time I run The Bandwidth Speed Test?

Like any major highway system, the Internet information highway has many roadways and interchanges, each with their own capacity and speed limit, and, like highways for cars, sometimes you get traffic delays. Just as you have to wait in a your car while other traffic goes through at a traffic light, data sent to your computer has to wait while other data passes through routers, the Internet equivalent of an intersection, on it's way to you.

You are more likely to run into slow Internet traffic during peak use hours than those times when fewer people are online, such as after 11 p.m. and before 7 a.m. If you really want to find out what your best possible Bandwidth Speed Test result is, try loading this page at 3:00am on a weeknight, when almost everyone is asleep when Internet use is at it's lowest. (Friday and Saturday nights are not a good choice.)

Raw Data:

If you're just dying to see the raw data used to calculate your download speed, here it is:

  • download start time:
  • download end time:
  • download time:
  • download size in thousands of bytes:
  • estimated line speed (K bits per second):
  • estimated line speed (K bytes per second):