Will the alarm work if I switch to another tab?

Yes. The timer uses the Web Notification API to send a system-level notification when the countdown ends, even if you've navigated away from the timer tab. You'll need to grant notification permission the first time you use it.

Can I set a countdown to a specific date?

Yes. Switch to date mode and select the target date and time. The countdown displays days, hours, minutes, and seconds remaining, updating in real time until the target moment is reached.

Does the timer keep running if I lose internet?

Yes. The countdown timer runs entirely in your browser and does not depend on a server connection. After the page loads, it works offline. The alarm will still sound when the countdown ends.

How accurate is the countdown?

The timer calculates remaining time from the target end point rather than accumulating intervals, which prevents drift. It remains accurate to within one second over any duration up to 24 hours.

Can I run multiple countdowns at the same time?

The current tool supports one active countdown at a time. Open multiple browser tabs to run separate countdowns simultaneously if needed.

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Countdown Timer

An online countdown timer counts down from a set duration or target date to zero, then triggers an audible alarm and browser notification. It works in background tabs and continues running offline, making it reliable for cooking, presentations, and event tracking.

100% FreeNo Signup RequiredBrowser-BasedPrivate & Secure

What is Countdown Timer?

A countdown timer is an online utility that counts down from a specified duration or target date to zero, alerting the user with an alarm and notification when the countdown completes.

Complementary Tools

These tools work great alongside Countdown Timer:

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Start Using Countdown Timer Today

Whether you need a 25-minute Pomodoro timer, a 90-second workout interval, or a countdown to a product launch months away, this tool handles both short and long countdowns with reliable alarm notifications. It runs in background tabs, works offline, and never requires an account. Start your countdown and focus on the task at hand—the alarm will let you know when time is up.

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