CalcInfinity

Countdown Calculator

Enter a date, time, and optional event name to see exactly how long is left — updating live.

CountdownEnter a date to start the countdown

Worked Example — countdown to a future event, and a past one

154d 12h 18m 19s"Time until your event" for a future date — switches to "Time since your event" automatically once the date passes

Frequently Asked Questions

The calculator switches automatically to showing how much time has elapsed since that date and time, instead of showing an error or a negative number.

Common Mistakes to Avoid

  • This counts every calendar day, including weekends — there's no weekdays-only mode. If you specifically need a workdays-only countdown (excluding Saturdays and Sundays), this calculator doesn't have that option — it always counts every day between now and your target date.
  • For a pregnancy due date, use the Pregnancy Due Date Calculator instead. This is a general-purpose countdown to any date and time you enter — it doesn't estimate a due date from your last period or conception date the way a pregnancy-specific tool does.

Last reviewed July 2026

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