Multiple Timer Manager

What this tool does

This is a multiple timer manager: it lets you run several independent countdown timers side by side, each with its own name and duration. You add a timer by giving it a label and a length in minutes and seconds, and it appears as its own card with a large countdown display, a progress bar, and start, pause, reset, and remove controls. Every timer runs separately — start one, pause another, reset a third — and each one sounds its own alarm and shows a Time’s up state the moment it reaches zero.

The timing is built to be reliable across all of the timers at once. Instead of counting interval ticks — which drift and are slowed down by the browser when a tab is in the background — every timer stores the exact clock time it should reach zero and measures against the live system clock. So whichever timers are running, their remaining times are accurate, and their alarms fire on schedule even if you have switched to another tab.

Use cases

A single timer is fine until you are juggling several things at once — and that is exactly when cooking, workouts, and study get complicated. In the kitchen you can run one timer for the roast, another for the vegetables, and a third for the sauce, each clearly named so you know which alarm is which. For exercise, set separate timers for work intervals and rest periods, or for different stations in a circuit. For study, run timers for different subjects or for a focus block alongside a break.

It is just as useful for everyday multitasking: laundry cycles, parking meters, something charging, a call you need to make in twenty minutes. Naming each timer turns a row of countdowns into a clear, glanceable picture of everything you are waiting on.

How to use it

1. In the Add a timer panel, type a name and set the minutes and seconds for the countdown.
2. Press Add (or the Enter key in the name field) to create the timer. It appears as a card with its own controls.
3. On each card, use Start and Pause to control that timer, Reset to return it to its full duration, and the × button to remove it.
4. When a timer reaches zero it alarms and shows Time’s up; press its reset button to silence it and run it again.
5. The sound toggle at the top mutes or unmutes the alarms for every timer. Remove all clears the whole list at once.

Tips

Give every timer a clear, specific name — “Eggs” or “Plank” rather than “Timer 2”. When two alarms could go off close together, the names are how you tell them apart. Add the timers you expect to need before you get busy, so starting one is a single tap when your hands are full.

You can leave the tab open in the background while you work elsewhere: each timer reads the real clock, so the alarms still arrive on time and any timer that finished while the tab was hidden alarms the moment you switch back. If you need quiet, mute all alarms with the global toggle and rely on the red Time’s up cards instead. Everything runs locally in this browser, so your timers and their names are never uploaded and there is no sign-up of any kind.