Pomodoro Timer
The Pomodoro Technique breaks work into focused 25-minute sessions separated by short breaks, with a longer break every four sessions. Start the timer below and let it auto-advance through the cycle for you.
How to Use the Pomodoro Timer
- Click "Start" to begin a 25-minute focus session.
- Work until you hear the alert sound — the timer automatically switches to a 5-minute short break.
- After every 4th focus session, a longer 15-minute break is scheduled automatically instead of a short one.
- Use "Pause" to temporarily stop the countdown, and "Reset" to restart the current mode from the beginning.
- Keep this tab open in the background — the timer keeps ticking as long as the page is loaded.
Why Use This Tool?
What is the Pomodoro Technique?
It's a time-management method developed in the late 1980s that breaks work into short, focused intervals (traditionally 25 minutes) called "pomodoros," each followed by a short break. After four pomodoros, you take a longer break. The structure reduces mental fatigue and helps maintain concentration on a single task without burning out.
Will the timer keep running if I switch tabs?
Yes — the countdown uses your device's clock via setInterval, so it keeps counting down even while this tab is in the background. However, if you close the tab or the browser entirely, the running timer will stop and reset when you come back, since no session state is saved between visits.
How does the sound alert work?
A short beep is generated directly in your browser using the Web Audio API — there's no audio file to download and nothing plays until a session actually ends. Make sure your device isn't muted so you don't miss the transition between focus and break.
Can I customize the session lengths?
This version uses the classic, research-backed defaults: 25 minutes focus, 5 minutes short break, and 15 minutes long break every 4th cycle. These defaults work well for most people and require no setup — just press Start and let the rhythm take over.