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DATES TOOL

Duration List Summary

Summarize a list of elapsed HH:MM:SS durations with total and average.

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Duration total average calculator online

Summarize a list of elapsed HH:MM:SS durations with total and average. Use this to inspect or plan dates and time windows from explicit reference values. Fixed examples make the result independent of the date on which this page is opened.

How to use it

Paste the multi-line input in the format shown below. Choose Run tool. Review the output, then copy or download it.

Worked examples

Use this to inspect or plan dates and time windows from explicit reference values. Fixed examples make the result independent of the date on which this page is opened.

Reproducible worked example

Settings: No additional settings.

Input:

01:30:00
00:45:30
02:00:00

With the input and settings above, the tool produces:

Output:

{
  "count": 3,
  "totalSeconds": 15330,
  "total": "04:15:30",
  "averageSeconds": 5110,
  "minimumSeconds": 2730,
  "maximumSeconds": 7200
}

For this input, “count” is 3; “totalSeconds” is 15330; “averageSeconds” is 5110. These are the named fields in the example output.

Limitations and common mistakes

  • Uses explicit UTC or offset-bearing inputs and Gregorian dates. No automatic timer, holiday feed or country-specific business rule is applied.
  • Combined input is bounded to 150,000 characters; output text is bounded to 1.2 million characters. Some algorithms impose smaller limits, stated in their error messages.

Frequently asked questions

What format should I enter?

Paste the multi-line input in the format shown below. The worked example shows the supported structure and actual output.

How can I summarise a list of elapsed HH:MM:SS durations with total and average online?

Paste the multi-line input in the format shown below. Choose Run tool. Review the output, then copy or download it.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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