Countdown to a Date
Guide: Week Numbers and Countdowns: ISO Weeks, Business Days and Time Left
Nothing you enter or choose here leaves your device. This tool runs in your browser.
How to use
- 1Pick the date and time, or tap a popular date like Christmas.
- 2Name your event if you like.
- 3Watch the live countdown, and read the weeks and weekdays left.
Frequently asked questions
How many days until a date?
Choose the date and the countdown shows the days, hours, minutes and seconds left, plus the number of weeks and days.
Does it count weekdays?
Yes. It also shows how many weekdays, Monday to Friday, remain, which is useful for deadlines. It doesn't know about public holidays.
Does the countdown keep running?
Yes. It updates every second while the page is open, using your device's clock and time zone.
What if the date has passed?
It shows how long ago it was instead, counting up.
Is my data sent anywhere?
No. Everything runs in your browser and nothing is sent to us.
Read the guide
Learn how this works and how to get the most from it.
Money, health & time
Week Numbers and Countdowns: ISO Weeks, Business Days and Time Left
How ISO and US week numbers work, why week 53 exists, how to count days and weekdays to a deadline, and where countdowns go wrong.
1 min read
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