Speed Test 50
 Test Your Internet Connection Speed

 

Your line speed:

Kbps

K bytes/sec

Does your Internet connection fly like an eagle or crawl like a tortoise? Is it just your imagination, or is your Internet connection slow today? Whether you are using a cable modem, an asymmetric digital subscriber line (ADSL), digital subscriber line (DSL), integrated services digital network (ISDN) connection, 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.

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Speed Test Thermometer

Off the chart!

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T-2

 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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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 Line Speed: box and Speed Test Thermometer above.

 

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):