Countdown Calculator
Date & TimeEnter a date, time, and optional event name to see exactly how long is left — updating live.
Countdown
The countdown updates every second in real time.
Worked Example — countdown to a future event, and a past one
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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