Countdown Timer
Set hours, minutes, and seconds, then pause or resume a timestamp-based countdown.
Enter values
Result
About this tool
Set a countdown of up to seven days and receive an on-screen message when it finishes. Remaining time is derived from timestamps and corrects itself after background throttling.
A sleeping device may delay the visible notice. Use your device's alarm as a backup for critical reminders.
Frequently asked questions
Does it continue in another tab?
Yes. Remaining time is corrected from timestamps when you return.
Does it play a sound?
A sound plays only after you enable it and press Start. The on-screen notice remains available if browser or device settings block audio.
Is timer state saved?
No. The timer state is not stored.
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