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Kordu Tools
Time & Date Runs in browser Updated 30 Mar 2026

Countdown Timer

Live countdown to any target date or duration with presets, alerts, pause/resume, reminders, and persistence.

Countdown

Date/time mode · Ready

Push reminders fall back to local browser scheduling unless server push is configured.

Enable this if you want the site to try notifying you after the tab is closed. Browser and device support still apply.

Countdown

25m 0s
00Days
00Hours
00Minutes
00Seconds

Date mode is ideal for deadlines and events.

 

The timer uses your browser clock and persists its current state locally. Notifications, sound, and vibration only fire if you enable them and the browser allows it.

Countdown reminders

Uses the countdown inputs above and stores a browser notification for when the timer ends.

Local fallback

Enable browser notifications to save this countdown as a reminder.

Without VAPID keys configured, reminders stay local to this browser and won't fire when the page is closed.
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How to use Countdown Timer

  1. Set a target date and time

    Use the date/time picker to choose when your event happens, or click a preset like New Year, Christmas, or tomorrow morning.

  2. Or switch to duration mode

    Switch to duration mode and pick a preset such as 5 minutes, 15 minutes, or 1 hour, or type a custom duration.

  3. Add an event label

    Give your countdown a name such as 'Product Launch' or 'Holiday'. This appears as the countdown heading.

  4. Enable alerts and notifications

    Allow browser notifications and optionally turn on sound or vibration so you are alerted when the timer reaches zero.

  5. Save a reminder

    Store the current countdown as a saved reminder so the browser alerts you even if you navigate away.

  6. Wait for the result

    When the target time is reached, the countdown displays 'Time's up!' in place of the counter and triggers any enabled alerts.

Countdown Timer FAQ

Does the countdown keep running if I switch tabs?
The display may slow when the tab is in the background due to browser throttling, but the countdown recalculates from the actual current time on every tick, so it shows the correct remaining time when you return.

Can I set a countdown to a specific timezone?
The countdown uses your local device time. If your event is in a different timezone, use the Timezone Converter to find the equivalent local time before entering it.

Can I set a countdown in the past?
If you set a target date in the past, the countdown immediately shows 'Time's up!' since the target has already been reached.

Are countdowns saved between sessions?
Yes. The current timer configuration is saved in your browser's local storage so it persists after a refresh. You can also save named reminders to be alerted at the end.

How do I count down to New Year?
Click the 'New Year' preset and the timer is automatically set to midnight on 1 January. The countdown updates live showing days, hours, minutes, and seconds remaining.

Can I count down to multiple events at once?
You can save multiple reminders for different events. The main display shows one active countdown at a time.

Does the alarm work on mobile?
Sound and vibration alerts work on most mobile browsers. Browser notification alerts require you to grant notification permission. Some browsers restrict audio playback until the user has interacted with the page.

What happens when the timer ends?
The display switches to 'Time's up!', any enabled audio alert plays, vibration triggers if enabled and supported, and a browser notification fires if permission was granted.

Is any data sent to a server?
The countdown runs entirely in your browser. Reminder data is held in browser storage only — nothing is transmitted to a server.

Background

Set a target date and time or pick a duration preset to see a live countdown showing days, hours, minutes, and seconds remaining. Add an optional label for your event — New Year, product launch, holiday, birthday — and the timer displays it as a heading. Pause or resume at any time, enable browser alerts, sound, or vibration, and save a reminder so the site notifies you when the countdown ends. Built-in presets for New Year, Christmas, and tomorrow morning get you started in seconds. The display updates every second and shows "Time's up!" when the target is reached. Timer state persists across page refreshes so you can return to the same setup. All processing runs in your browser — nothing is stored or transmitted unless you explicitly save a reminder.

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