Countdown Calculator
Find how much time remains until (or has passed since) any date
Frequently Asked Questions
The calculator takes the difference between now and your target date/time, in milliseconds, then breaks it down into years, months, days, hours, minutes, and seconds using calendar-accurate month lengths.
Yes. Enter any past date and the calculator automatically shows the elapsed time since that date instead of a countdown.
Yes. The calendar breakdown (years/months/days) uses JavaScript's native date arithmetic, which correctly accounts for leap years and varying month lengths.
Your device's local time zone. If you're coordinating an event across time zones, make sure everyone enters the target time in their own local time.