Countdown timers with a sound at the end

The time left shows in the browser tab.

Time laps to the hundredth of a second, or run several named countdowns at once with a sound when each one ends. Times are worked out from the clock, not by counting ticks, so they stay right even when the tab sits in the background. It is free, with no ads and no sign-up.

How to use the stopwatch and timers, step by step

1. On Stopwatch, press Start. Press Lap at each split and Reset to clear it.
2. On Timer, pick a quick timer such as 1, 3, 5, 10, 15, 25 or 30 minutes or 1 hour, or type your own Hours, Minutes and Seconds.
3. Give the timer a Name if you like and press Add timer.
4. Choose what happens When a timer ends and pick a Sound. Press Test sound to hear it.
5. Press Start. Use Full screen to show the clock across a room.

Keyboard shortcuts on the stopwatch: Space starts or stops, L records a lap, R resets and F opens full screen.

Stopwatch with laps

Start, then press Lap at each split. Every lap shows its own time and the running total, with the fastest lap in green and the slowest in red. Download the laps as a CSV file to open in a spreadsheet. The stopwatch and its laps are saved in this browser, so a reload carries on where you left off.

Several countdown timers

Pick a quick timer or type hours, minutes and seconds, and give it a name like “Pasta” or “Laundry”. Run as many as you need side by side. The browser tab shows the time left on the next timer to finish, and each one plays the sound you chose when it reaches zero. Press +1 min to add a minute without stopping. The sounds are Chime, Bell, Beeps and Digital.

Why the time stays right

Browsers slow down pages in background tabs, so a timer that counts ticks drifts. This one stores the moment you pressed start and works out the time from the clock on every update, and the end sound is scheduled ahead with the browser’s audio engine. Nothing is sent anywhere; your timers live only on this device. Keep the tab open while a timer runs, because the sound will not play if the tab is closed or the computer is asleep.

Good uses

• Cooking and baking with several timers at once.
• Study sessions and breaks, such as 25 minutes of work and a short rest.
• Timing laps in a run, a swim or a game.
• Presentations, speeches and classroom activities.
• Workouts and rest periods.

For a wake-up call at a time of day, use the online alarm. For classroom countdowns, there is the classroom timer, and for focused work, the focus timer.

Questions

Does it keep running if I switch tabs?

Yes. The time is worked out from the clock, so it stays right in the background.

Can I run more than one timer?

Yes. Add as many as you need, each with its own name.

Can I save my lap times?

Yes. Download them as a CSV file.