Countdown timer
Run one or many countdown timers with sound and notifications when each one finishes.
How to use
Enter a duration — as a clock value like 25:00, in plain words like “1h 30m”, or just a number of minutes — and press Add to create a timer. Tap the quick presets for common durations. You can run several independent timers side by side, which is handy for cooking, workouts or parallel tasks.
Each timer has its own Start, Pause and Reset controls and a progress bar. When a timer reaches zero it plays a sound and (if you allow it) shows a desktop notification, then you can restart it with one click.
Everything runs locally in your browser. Share a link with a duration baked in to send someone a ready-to-start timer, and the timers keep accurate time using absolute timestamps rather than counting down tick by tick.
Examples
Run a 12-minute pasta timer next to a 25-minute sauce timer without losing track.
Send a link like ?d=600 so a teammate opens a 10-minute timer ready to go.
One tap starts a 5- or 25-minute timer for breaks or focused work.
Frequently asked questions
Can I run more than one timer?
Yes — add as many as you like and each runs independently with its own controls and progress bar.
Will it alert me when it ends?
It plays a beep and, if you grant notification permission, shows a desktop notification when a timer hits zero.
What duration formats are accepted?
Clock format (25:00, 1:30:00), units (1h 30m, 90s), or a bare number which is treated as minutes.
Is it accurate in a background tab?
Yes. Timers are anchored to a finish timestamp, so they're correct even if the tab is throttled while hidden.
Related tools
Focus with the Pomodoro technique — customizable work/break cycles, sound and notifications.
A precise online stopwatch with lap splits and keyboard shortcuts — counts in hundredths of a second.
See the current time across multiple cities and time zones at once, updating live.
Pick a time in one zone and see it across everyone's time zones, with working-hours hints.
Convert between Unix timestamps and human-readable dates in every common format.