Days until a date
Pick any future date to see exactly how many days and weeks remain. Great for countdowns to birthdays, holidays, events, or deadlines.
How it works
All date arithmetic uses the browser's native Date object. Day differences are computed by subtracting timestamps and dividing by 86,400,000 ms. Age is broken into complete years, remaining months, and remaining days by comparing each component of the date individually. The page does not call any external library or server during the calculation.
Processing runs in your browser
All calculations happen instantly in your browser tab. Our servers are not involved at any point.
Related operations
For working out an exact age in years, months, and days, try the age calculator. To convert any timestamp into a date, use Unix timestamp. For scheduling work across time zones, see the timezone converter.
Frequently asked questions
- How many days until Christmas?
- Enter December 25 of the current year into the date field and the tool will show the exact number of days remaining.
- Can I count down to a date in the past?
- The tool will still show a result for past dates, it will display a negative number of days, indicating how many days ago the date was.
- How are weeks calculated?
- Weeks are calculated by dividing the total days by 7 and flooring the result. The remaining days are shown separately.