About the Time Duration Calculator

Pick a start and an end date-time to see the exact duration in days, hours and minutes, as well as total hours, minutes and seconds. It works across midnight and across several days.

How to use it

  1. Choose the start date and time.
  2. Choose the end date and time.
  3. Read the duration and the totals in hours, minutes and seconds.

Frequently asked questions

Does it handle shifts that cross midnight?
Yes. Because both fields include the date, a shift from 10 pm to 6 am is calculated correctly.
Does it account for daylight saving?
It uses your device’s time zone rules, so a change in clocks between the two moments is included.

Private by design: this tool runs in your browser. Read the privacy policy.