Countdown Timer & Stopwatch - Online Timer with Alarm, Date Countdown and Laps
Countdown Timer & Stopwatch
Count down a set time or to a date, or time something with laps
Timer with an Alarm
Set hours, minutes and seconds, or tap a preset of 1, 5, 10, 25 or 60 minutes. A three-beep alarm sounds when time is up.
Countdown to a Date
Pick a date and time and watch the days, hours, minutes and seconds remaining, for a launch, a trip or a deadline.
Stopwatch with Laps
Time to the hundredth of a second and record laps, with the fastest and slowest highlighted.
Accurate in the Background
Time is measured against the clock, not by counting ticks, so it stays right if your browser slows the tab down. The countdown also shows in the tab title.
Using the Timer Well
A countdown is handy for anything with a fixed length: cooking, a workout round, a presentation slot, a focus session. Because browsers may pause background tabs, keep the page open and let the alarm do the work: the timer checks the real clock every time it wakes up, so it will show the correct time left even if the tab slept, and the remaining time in the tab title lets you see it without switching back. To get the alarm sound, the page needs one click or tap on Start first, which is a browser rule for any web page that plays sound.
The date countdown uses your device's time zone and clock, so it matches the local time you pick; if you need a moment in another time zone, convert it first. Daylight saving changes are handled by the clock itself. A countdown that has reached zero is ready to run again with one tap, and the stopwatch keeps its lap list until you reset it. Nothing you enter is sent anywhere.
Key Takeaways
- Limits: Up to 999 hours 59 minutes 59 seconds for the timer; any future date for the date countdown.
- Sound: A short three-beep alarm, which you can switch off with the checkbox.
- Related tools: See also the Pomodoro Timer for work and break cycles.