How the multi-timer works
Add as many countdowns as you need and run them at the same time. Each timer has its own label and alert sound, so you can tell them apart at a glance. Handy for a multi-course meal, workout circuits, or separate work blocks. If you only ever time one thing, the single countdown timer is simpler.
How to set a timer
- Add a timer: Click the "Add Timer" box (the dashed box with a "+") at the end of the list. A new timer appears.
- Set the duration: Enter the hours, minutes, and seconds.
- Name it (optional): Click the default name (like "Timer 1") to label it, for example "Pasta" or "Study block."
- Start and pause: Click the green Start button to begin the countdown. It turns into a red Pause button; click that to stop, and Start again to resume.
- Reset: Once a timer is paused or finished, click Reset to set it back to its original duration.
- Alert: When a timer hits zero it plays a sound (unless muted) and shows that it's done.
Managing several timers
- Reorder: Drag a timer to move it up or down the list.
- Remove: Click the × on a timer to delete it.
- Run them together: Any mix of timers can run, pause, or sit ready at the same time. For study or work blocks, common Pomodoro lengths are a good starting point.
Other features
- Session restore: If you close the browser, your timers and their state are saved. When you come back you'll be asked to restore them, and any time that passed while the page was closed is subtracted from running timers.
- Light and dark mode: Click the sun/moon icon to switch themes.
- Fullscreen: Click the fullscreen icon to see all your timers on one screen.
- Sound: Click the speaker icon to mute or unmute the alerts. If you need a timer to go off at a set clock time instead of after a countdown, set an online alarm.
Frequently asked questions
How accurate are the timers?
Each timer reads the time from your browser's clock with JavaScript's `Date.now()`, so the countdown stays accurate even between display updates. It's plenty precise for cooking, workouts, and study, but for safety-critical timing use a dedicated device.
What happens if I close or refresh the page?
Your timers, their durations, and names are saved in your browser's local storage. When you reopen or refresh, you'll be asked to restore them, and any time that passed while a timer was running is subtracted so it stays in sync.
Is my timer data private?
Your timers are saved only in your own browser, never on a server. Names and durations stay in local storage on your device.
How many timers can I set at once?
There's no fixed limit. It handles dozens of timers smoothly; with hundreds you may notice it slow down, depending on your device.
Can I change the alert sound?
Not yet. Every timer uses the same built-in alert. Custom sounds aren't supported right now.
Does the multi-timer work offline?
Mostly, yes. Once the page has loaded, you can set, start, pause, and manage timers without a connection, and session restore works offline too since it uses local storage. You only need the internet to load the page the first time or after clearing your cache.
What do I need to run it?
Any modern browser (Chrome, Firefox, Safari, Edge) on a desktop, laptop, tablet, or phone, with JavaScript enabled. No plugins or installs.
Can I use this on my phone?
Yes. The layout is responsive, so you can add, manage, and run several timers from a phone or tablet browser.
Can I make one timer fill the screen?
Fullscreen here shows all your timers at once, not a single one. For one large countdown, the dedicated single-timer page works better. To count up instead of down, use the online stopwatch.