A live countdown clock for any date
This countdown shows how much time is left until the date and time you choose, in days, hours, minutes and seconds. The numbers update every second, right in your browser. There is nothing to install and no account to create. When you first open the page, it counts down to the next New Year, so you see it working right away. Change the date, and the new countdown starts at once.
It is made for the moments you look forward to: a wedding, a birthday, a trip, an exam, a product launch, the last day of school or the first day of retirement. Give it a title, put it in full screen on a TV or a spare tablet, or send the link to the people who are waiting with you.
How to set up your countdown
- Choose the date. Tap the date in the sentence under the numbers. Three wheels open: month, day and year. Turn them, then tap Done.
- Choose the time. Tap the time next to it. By default the countdown aims at midnight, the very start of the day. Pick 6:30 PM if the party starts at 6:30 PM.
- Name it. Type a title in the box above the numbers. The title shows in the browser tab, next to the time left, and on the screen that appears at zero.
- Pick a sound. A bell rings when the countdown reaches zero, if the page is open. Tap the sound to try a chime, a beep or a gentle rise instead.
Your last countdown is saved on this device, so it is still there when you come back tomorrow. Nothing is sent to a server.
Share a countdown with one link
Tap Copy link at the bottom of the screen. The link holds the date, the time and the title, so anyone who opens it sees the same countdown. Paste it in a group chat, an email or a calendar invite.
A shared link looks like this: clooock.com/countdown/?to=2027-07-14T18:30&t=Our%20wedding. You can also write one by hand:
| Part | Example | Meaning |
|---|---|---|
to | 2027-07-14T18:30 | Date and time: year, month, day, then the time on a 24-hour clock |
t | Our%20wedding | Title, optional (%20 stands for a space) |
The time in the link is a local time. Someone in Paris and someone in New York who open a link to 2027-01-01T00:00 each count down to midnight in their own city, which is exactly what you want for New Year. For an event that happens at one moment for everyone, such as a live stream at 3:00 PM in New York, convert the time first with the time zone converter and send each group its own link.
How the countdown is calculated
The countdown subtracts the current time from the target, to the second, with the clock of your device. Days are blocks of 24 hours, then come hours, minutes and seconds. On a Monday at 6:00 PM, a countdown to Friday at midnight shows 3 days and 6 hours.
- Daylight saving time. When the clocks change, one day has 23 or 25 hours. The countdown follows real time, so the hours left can differ by one from a count of calendar days. Midnight on the target date stays midnight. The daylight saving time page gives the next change.
- Sleeps or days. Children often count “sleeps”, the nights left. A countdown that shows 2 days and 5 hours means three nights if the event is in the morning. To count calendar days between two dates, use the date calculator.
Once the target has passed, the numbers stay at zero and a line under the sentence tells you how long ago it ended.
Ready-made countdowns
For the big dates of the year, a page is already set up. It finds the next date on its own, even for holidays that move every year:
| Countdown | How the date is set |
|---|---|
| New Year | January 1, at midnight |
| Valentine’s Day | February 14 |
| Easter | First Sunday after the church full moon on or after March 21 |
| Mother’s Day | Second Sunday in May |
| Father’s Day | Third Sunday in June |
| Summer | The June solstice, to the minute |
| Halloween | October 31 |
| Thanksgiving | Fourth Thursday in November |
| Black Friday | The day after Thanksgiving |
Christmas has its own Christmas countdown, with snow and games. Public holidays are listed on the holidays page.
Ideas for your countdown
- A wedding or an anniversary: share the link with the guests in the invitation email.
- A trip: count down to the departure time of your flight and check it every morning.
- An exam or a deadline: keep it in a pinned tab. Watching the days go down helps to plan the work.
- A launch or a sale: put the countdown on a screen in the office or the shop.
- Retirement, the end of the school year, a due date: anything you look forward to.
- New Year’s Eve: full screen on the TV, the sound on, and the whole room counts the last ten seconds together.
Tips
- Full screen: the button at the top right hides everything but the countdown. Use − and + to make the numbers even bigger.
- Keep the tab open to hear the bell at zero. During the last hour, the page asks the screen to stay on.
- Check the browser tab: its title shows the time left, even when you work in another tab.
- Short countdowns: for a few minutes, the online timer is quicker to set. To wake up at a given time, use the alarm clock.