Countdown Calculator
Countdown Calculator shows the live time remaining until any target date and time — broken into days, hours, minutes and seconds — and keeps ticking every second. Once the moment passes, it counts the time elapsed since.
Set a deadline, a launch, a birthday or a holiday and watch it tick down. Everything runs in your browser.
How to use Countdown Calculator
- 1
Set the target
Pick the date and time you are counting down to (it defaults to the next New Year).
- 2
Watch it tick
The days, hours, minutes and seconds remaining update live every second.
- 3
See the details
A relative phrase and total days and hours give the full picture.
Counting down and counting up
Before the target, the calculator counts down to zero. The instant it passes, it flips to counting up, showing how long ago the moment was. That makes it equally useful for upcoming deadlines and for tracking time since an event.
The countdown is precise to the second and is based on your device clock, so it stays in step with the real time.
Common uses
People use countdowns for product launches, exam dates, project deadlines, holidays, birthdays and new-year celebrations. Because the target includes a time of day, you can count down to an exact moment, not just a date.
To instead add or subtract a span from a date, use the Date Calculator.
Frequently asked questions
- Does the countdown update automatically?
- Yes. It ticks once per second based on your device clock, with no need to refresh.
- What happens after the target passes?
- It switches to counting up, showing how much time has elapsed since the target moment.
- Is my data sent to a server?
- No. The countdown runs entirely in your browser.
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