Set a 20 minute timer
The timer is set to 20 minutes. Press Start, or Space, and the tone sounds when the time is up.
- Runs on your device
- No sign-up
- Works offline after a visit
| Lap | Lap time | Total |
|---|
Keys: Space starts or pauses, R resets, and L records a lap on the stopwatch.
The page opens with 20 minutes in the fields, so the display reads 20:00. The countdown covers 1,200 seconds and ends with a tone. It is worked out from the clock, so switching tabs during the 20 minutes does not change how much time is left.
Twenty minutes is a common length for a short nap, and for a focused sprint on one task. Keep the device where you can hear the tone, because a phone can stop the sound when its screen locks. For a shorter rest, the 10 minute timer is an option.
How to set a countdown timer
- Pick a preset, or type hours, minutes and seconds, then press Start.
- Switch to Stopwatch for laps, and press Lap or L to record each one.
- Switch tabs if you like. The time stays right, and a tone sounds when a timer reaches zero.
Questions
How do I set the timer for a different length?
Type the length you want into the hours, minutes and seconds fields before you press Start. The quick buttons on the page set common lengths for you.
Will the screen dim while I rest?
Only if your device dims it. Tick Keep the screen on while it runs if you want the countdown visible, where your browser supports it. Otherwise your device settings decide when the screen dims.
Why does the timer stay accurate when I switch tabs?
It reads the clock rather than counting ticks. When it starts, it saves the end time, and each update subtracts the current time from that. Browsers slow down timers in background tabs, so a counter that adds one per tick can drift. This one does not.
Will the sound play if the tab is in the background?
The tone is made in the browser and scheduled on the audio clock when the timer starts, so it sounds at the end time even if the tab is in the background. The page title shows the time left while it runs. Your device volume and mute settings still apply, and on phones the browser may stop sound when the screen locks, so keep the page open and the volume up.
Does the screen stay on while the timer runs?
Only if you tick the box, and only where the browser supports the Screen Wake Lock. The browser releases the lock when the tab is hidden, so the page asks again when you come back.
What do the lap times mean?
Each lap time is the time since the previous lap, and the total is the time since the stopwatch started. Reset clears the laps. Nothing is saved after you close the page.
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