Pomodoro Timer & Stopwatch

A Pomodoro timer with configurable work and break lengths, plus a stopwatch with lap times. Both keep accurate time in a background tab.

Focus

25:00

0 sessions completed

About the pomodoro timer

The Pomodoro technique breaks work into focused intervals, traditionally 25 minutes, separated by short breaks, with a longer break after every fourth session. The point is less the specific numbers than the commitment to a single task for one whole interval. This timer tracks completed sessions, cycles automatically into breaks, and signals transitions with a sound and a tab-title update. Timing is anchored to the system clock rather than a counted interval, so throttled background tabs do not cause drift.

How to use the pomodoro timer

  1. Switch between the Pomodoro timer and the stopwatch using the tabs.
  2. Adjust the work, short break and long break lengths if the defaults do not suit you.
  3. Press Start and work on one task until the interval ends.
  4. Take the break when prompted. After four work sessions you get a long break.

Frequently asked questions

Why 25 minutes?
It was the interval Francesco Cirillo happened to use with a tomato-shaped kitchen timer in the late 1980s, and it stuck. Nothing is special about the number. Many people work better with 50-minute intervals and 10-minute breaks; the discipline of the boundary is what matters.
Does the timer keep running if I switch tabs?
Yes. It calculates remaining time from timestamps rather than counting down with an interval, so browser throttling of background tabs does not make it lose time. You will still get the alert when the interval ends.
Will it work offline?
Once the page has loaded it makes no further network requests, so it keeps working if you lose connectivity. Reloading the page while offline requires the browser cache to still hold it.