Pick a preset or type any time, then press start. An alarm sounds when the countdown reaches zero.
How to set the online timer
- Tap the hours, minutes or seconds on the display and type the time you want, or tap a preset such as 1 min or 5 min.
- Choose an alarm sound: beep, chime or digital. Use Test to preview it.
- Press Start (or the space bar) to begin the countdown.
- When the timer reaches zero the alarm rings. Press Stop to silence it.
Tips for a reliable alarm
- Turn the volume up and press Test before you start, so you know you'll hear it.
- Keep the tab open. You can switch to other tabs, but closing the browser stops the alarm.
- On a phone, keep the screen on. The timer asks your phone to stay awake while it runs, but a locked phone can pause web pages. For alarms with the screen off, use the free Android app.
Take it with you: the Multi Stopwatch & Timer Plus app
A browser tab can be paused when your phone locks. The free Android app keeps counting in the background and rings even with the screen off.
- Run several stopwatches and timers at the same time
- Alarms that ring with the screen off or the phone locked
- Interval workout timer with sets, work and rest
- Lap times you can keep and share
- Full-screen display you can read from across the room
More free tools
Frequently asked questions
How do I set a timer online?
Tap the numbers on the timer display and type the hours, minutes and seconds directly, or tap one of the preset buttons. Then press Start or Enter.
Will the timer ring if I switch to another tab?
Yes. The countdown is based on your device clock and the alarm plays even when the tab is in the background, as long as the browser stays open.
Will the timer ring when my phone is locked?
Not always. Phones often pause web pages when the screen locks. The Multi Stopwatch & Timer Plus app for Android rings reliably with the screen off.
What is the longest timer I can set?
You can type up to 99 hours, 59 minutes and 59 seconds.
Can I pause the timer?
Yes. Press the pause button (or the space bar) to pause and press it again to continue. Reset returns to the time you set.
Which alarm sounds are available?
Beep, chime and digital. The alarm repeats until you press Stop, for up to one minute.
