Countdown Timer
Set a target date and time and watch the live countdown in days, hours, minutes and seconds.
How to use this tool
- Open this page — it runs instantly in your browser, no signup or install.
- Allow any permission prompt if asked; everything stays on your device.
- Use the on-screen controls — results update live.
Set a target date and time and watch the live countdown in days, hours, minutes and seconds.
How it works
The countdown timer calculates the exact time remaining until a specific date and time you choose, then displays it live as a ticking counter broken into days, hours, minutes, and seconds. The page updates every second in your browser with no refresh needed.
Set a name for your event, pick the target date and time, and optionally select the timezone the deadline is defined in. The countdown begins immediately. You can bookmark the page with the event pre-filled in the URL so you can return to it without re-entering the details.
Common uses include product launch deadlines, exam dates, holiday countdowns, contract expiry, sports event start times, and personal milestones like birthdays or anniversaries. The timer also works for past dates, in which case it shows how much time has elapsed since the event.
The countdown runs entirely in your browser. There are no notifications or alarms; for those you would need a dedicated alarm app. This tool is purely a visual countdown display.
Worked example
Count down to a product launch
- Enter the event name: Product Launch.
- Set the target date and time to the scheduled release moment, e.g. 2025-09-01 09:00.
- Choose the timezone the launch is announced in, e.g. US/Eastern.
- The counter immediately shows days, hours, minutes, and seconds remaining.
- Bookmark the URL to share with the team or revisit.
A live ticking countdown the whole team can open in any browser to see exactly how long remains.
Common mistakes to avoid
- Entering the target time without checking the timezone, causing the countdown to be off by several hours.
- Closing the browser tab and expecting the countdown to continue — it only runs while the page is open.
- Confusing this visual countdown with a timer that sends reminders or notifications.
Key terms
- Target date/time
- The future moment the countdown is counting toward. When this moment arrives, the counter reaches zero.
- Elapsed time
- If the target date is in the past, the timer switches to showing how much time has passed since that moment.
- Timezone
- The geographic region whose local time standard is used to interpret the target date and time you enter.
Frequently asked questions
- Can I use this for multiple countdowns?
- This page shows one countdown at a time. Bookmark the page with different target dates for each event.