Set your countdown
Quick presets
Countdown
Total time breakdown
- Total weeks
- 0
- Total hours
- 0
- Total minutes
- 0
- Total business days
- 0
How the days until calculator works
DaysUntilCalculator compares the current moment with the date and time you choose. It counts whole calendar days first, then the remaining hours, minutes and seconds, so the display stays correct across leap years and daylight saving changes. Everything is calculated by your browser using your local timezone, and nothing is uploaded.
What you can count down to
Use it for days until Christmas, days until my birthday, a wedding, a holiday trip, an exam or a project deadline. Add a start date to see how far along you are, and copy the link to share the exact countdown with anyone.
Business days explained
Business days are Monday to Friday. The total counts weekdays from today up to, but not including, the target date. Public holidays are not removed because they vary by country and region.
Frequently asked questions
How do I calculate the exact number of days until a date?
Pick the target date (and optionally a time). The calculator subtracts the current moment from the target using calendar days, then shows the leftover hours, minutes and seconds, updating every second.
Does this calculator account for leap years and timezones?
Yes. It uses your browser's native date engine, which knows leap years such as February 29 and applies your device's local timezone and daylight saving changes. Days are counted as calendar days, so clock changes do not shift the day count.
How do I calculate remaining business days?
Total Business Days counts Monday to Friday from today up to, but not including, the target date. Weekends are skipped; public holidays are not.
How many days until Christmas?
Press the Christmas preset to count down to December 25. If this year's Christmas has passed, the next one is used.
How can I count the days until my birthday?
Choose your next birthday as the target date, type a name such as My Birthday, then copy the shareable link to bookmark it.
Is my data private?
Yes. Everything runs locally in your browser. No dates or event names are sent to a server. Saved events stay in your browser's local storage.