Online Timer
Set a length of time, press Start, and the alarm rings when it reaches zero.
How it works
Type a number of hours, minutes and seconds — or tap a preset — and press Start. The timer continues while you use another tab in most modern browsers, and the tab title shows the time remaining; it sounds an alarm when it reaches zero, provided the page remains active and your browser permits audio. Browser power-saving and background-tab restrictions may delay updates or prevent the alarm, so keep the page visible for anything important — see browser timing limitations for why. Pause and resume anytime, or Reset to start over. Space starts/pauses.
Counting down to a date or event instead? Make a countdown. Need to time how long something takes? Use the stopwatch.
Other timers
Timer FAQ
Is the online timer free? Yes — free, with no sign-up and no app to install.
Does it ring if I switch tabs? It continues in most modern browsers and the tab title shows the time left, then attempts to sound an alarm when it reaches zero. Browser power-saving and background-tab restrictions can delay updates or prevent the alarm, so keep the tab open for exact timing — see browser timing limitations for why.
Can I set a timer for a specific length? Type any hours, minutes and seconds, or tap a preset like 5 min or 1 hr.