Countdown to Date – Days Until Calculator

D-0

Name Date Time (optional)

How many days until…? Count down to any date

Pick a date and see instantly how many days are left (D-days) or how many days have passed. The countdown ticks every second and the colored disc shrinks as the day gets closer. Use it for exams, vacations, weddings, birthdays or deadlines.

How to use

Tap + New countdown, enter a name and a date, and save. Add a time to count down to the exact second.
Save as many countdowns as you like and switch between them. They are stored only in this browser, never sent to a server.
Copy link to send the same countdown to friends.
Enter a past date (a first date, a start date, a birthday) to see which day today is and the upcoming 100-day and yearly anniversaries.
Press F for full screen to show the countdown on a classroom or office screen.

FAQ

How are the days counted?

The day itself is D-Day, the day before is D-1 and the day after is D+1. Days are counted by calendar date, regardless of the time.

Does the start date count as day 1?

By default yes, so the 100th day is 99 days after the start. Turn off Count the start date as day 1 in Settings to start counting the next day.