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# Email Response-Time calculator

Measures reply times per email thread in working hours and reports median, p90 and breaches against your first-response target.

Five comma separated fields per line: id, from, received, replied, resolved. Leave the reply blank for a thread still waiting. Times are yyyy-mm-dd hh:mm on the wall clock.

Paste your threads, one per line, and every reply time converts to working minutes: lunch, weekends and holidays drop out, and each thread gets a breach flag against your target.

This is first-response arithmetic on what you paste, not a mailbox connection: nothing is fetched, and the numbers are only as good as the lines you type. Times are treated as plain wall clock, so daylight-saving shifts inside a counted interval are not modelled, seconds are dropped, and an overnight support window is out of scope. Median and p90 interpolate linearly between order statistics. A zero-minute reply counts as within target.
OptionsDownload CSV

## More time & date tools

- [Business day calculator](/time/business-days)
- [Action item tracker](/time/action-item-tracker)
- [Date calculator](/time/date-math)
[All time & date tools](/time)

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