Online Timer & Stopwatch
A countdown timer, a stopwatch and a Pomodoro clock in one tab.
About this online timer & stopwatch
Three clocks that people keep a browser tab open for: a countdown with an alarm at the end, a stopwatch with lap times, and a Pomodoro cycle that alternates focus blocks with short breaks.
It keeps running accurately even when the tab is in the background, because it tracks real elapsed time rather than counting frames — browsers throttle background tabs, which is why so many web timers drift.
How to use it
- Pick timer, stopwatch or Pomodoro.
- For the timer, tap a preset or type your own minutes and seconds.
- Start, pause and reset with the buttons or the space bar.
- The tab title shows the remaining time, so you can watch it from another tab.
Online Timer & Stopwatch — FAQ
Does it keep running if I switch tabs?
Yes. It measures real elapsed time rather than counting frames, so background throttling does not make it drift.
Will the alarm sound if my tab is muted?
No. Browsers block audio from muted or never-interacted-with tabs, which is why the page title and screen flash also change when time is up.
What is the Pomodoro technique?
Twenty-five minutes of focused work, then a five-minute break, repeated. After four cycles you take a longer break. The point is the enforced stop, not the exact numbers.
Does it work offline?
Once the page has loaded, yes — everything runs in your browser.