Countdown Timer Generator
Generate a countdown to any future date and time.
What is Countdown?
Enter any future date and the tool counts down to it in real time, ticking every second and remaining accurate across page reloads.
How it works
It subtracts the current instant from the target instant each tick and decomposes the remaining milliseconds into calendar units.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Launch countdown
Set a target date and time for your product launch and the timer ticks down in days, hours, minutes, and seconds to the exact moment.
Common mistakes
Mixing timezones with your audience
If your audience is global, pick the timezone the countdown should count to — the same moment is shown consistently regardless of the viewer's clock.
Frequently asked questions
What happens when the countdown reaches zero?
The timer shows the target has passed and can be reset or repointed to a new date.
Does it keep running while the page is open?
Yes — it updates every second in real time while the tab is open, using the device's clock.
Can I use it for a repeating deadline?
For repeating events use the RRULE generator instead; this timer targets a single point in time.