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Home > Speedtest > Speed Test Definitions > Jitter

Jitter

Jitter is a measurement of variation in consecutive latency test results, and is represented as an absolute value. Ideally, one would want a jitter result as close to zero as possible.​

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computer sending test results

What is Jitter?

For example, a latency test is started by using the ping command to a server on the internet with the following results:

  • First latency test is 30ms | No jitter can be calculated with only one latency result.
  • Second latency test is 35ms | 35ms - 30ms = 5ms of jitter
  • Third latency test is 32 | 32ms - 35ms = 3ms of jitter
  • Fourth latency test is 50ms | 50ms - 32ms = 18ms of jitter

Jitter is considered to be bad when it is more than 20% of your average latency. Since latency tests require the use of bandwidth, a sudden burst in download or upload usage can cause a larger latency result and, in turn, affect your jitter results. The use of Wi-Fi will also have a large impact on latency and jitter because it is affected by interference and objects blocking line of sight to the Wi-Fi device.

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*Rates shown do not include E-911 charges, taxes, and surcharges. Most providers offering unlimited calling have restrictions and some rates shown are promotional rates based on term contracts or promotional periods. Be sure to read individual providers terms and conditions before you buy. Rates and features displayed for each provider have been sourced from provider's site and other online sources. While we strive to display current information, be sure to check directly with each provider as their plans, pricing, and features are subject to change.
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*Rates shown do not include E-911 charges, taxes, and surcharges. Most providers offering unlimited calling have restrictions and some rates shown are promotional rates based on term contracts or promotional periods. Be sure to read individual providers terms and conditions before you buy. Rates and features displayed for each provider have been sourced from provider's site and other online sources. While we strive to display current information, be sure to check directly with each provider as their plans, pricing, and features are subject to change.
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*Rates shown do not include E-911 charges, taxes, and surcharges. Most providers offering unlimited calling have restrictions and some rates shown are promotional rates based on term contracts or promotional periods. Be sure to read individual providers terms and conditions before you buy. Rates and features displayed for each provider have been sourced from provider's site and other online sources. While we strive to display current information, be sure to check directly with each provider as their plans, pricing, and features are subject to change.

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