Free tool · No sign-up

Days Until Calculator

Pick a target date and this calculator shows exactly how many days until it from today — plus the countdown in weeks and in years, months, and days, and the weekday it falls on. Past dates show how many days ago instead. It runs entirely in your browser: free, instant, and no sign-up.

Target date

Pick a date — a birthday, deadline, trip, or holiday — to see exactly how many days away it is.

Frequently asked questions

Count the days from today's date up to (but not including) the target date, accounting for month lengths and leap years. This calculator does it for you — pick the date and it shows the exact day count, the same span in weeks, and the years/months/days breakdown.

It counts the nights between today and the target date — so tomorrow is 1 day away and today is 0. That matches how most people count down to birthdays and deadlines. It doesn't include the target date itself.

The calculator flips to a days-since count and shows how many days ago that date was, with the same weeks and years/months/days breakdown.

Yes — free, no sign-up, and the math runs in your browser, so the dates you enter are never uploaded or stored anywhere.