Set a 10 minute timer
The timer is set to 10 minutes and shows 10:00. Press Start, or Space, when you are ready to begin.
- 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.
Ten minutes is 600 seconds. The page opens with 10 minutes in the fields, so the display waits at 10:00 until you start it. The countdown reads the clock, so a switch to another tab does not change the total, and the tab title shows the time left.
Ten minutes suits a short review of notes or one small errand, with a clear point to stop at the tone. For a shorter round, try the 5 minute timer.
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
Why does it show 10:00 before I start?
The timer is set and waiting. The display shows the time you chose, and it counts down only after you press Start or Space.
How many seconds is it?
10 minutes is 600 seconds. The 10 min button sets it for you, and you can type any other length into the hours, minutes and seconds fields.
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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