Pomodoro Timer
25 minutes of work, 5 minutes of rest — one cycle. Every 4 rounds automatically switches to a long break to help you maintain a steady, productive focus rhythm.
Customize Durations
- The page defaults to "Work" mode (25 minutes). Click "Start" to begin the countdown.
- When the countdown ends, a chime plays and the timer switches to "Short Break" (5 minutes) — press "Start" to continue.
- After every 4 completed work rounds, the next break automatically becomes a "Long Break" (15 minutes).
- Use the "Customize Durations" section to adjust minutes for each mode. Your settings are saved in the browser.
- Click any of the three mode buttons at the top to switch manually at any time.
Tip: The browser tab title shows the remaining time during countdown, so you can track progress even when the tab is in the background.
What is the Pomodoro Technique?
Developed by Francesco Cirillo in the late 1980s, the Pomodoro Technique uses 25-minute focused work sessions (called "pomodoros") followed by a 5-minute break. After every 4 pomodoros, take a longer break. This rhythm helps maintain high focus over extended periods.
Will the timer keep running if I switch tabs?
Yes. The timer uses timestamp-based correction, so switching tabs or minimizing the window has no effect on accuracy.
How do I change the default 25 minutes?
Scroll down to the "Customize Durations" section, adjust the minutes for work, short break, or long break, then click "Save Settings". Your preferences are stored in localStorage.
Does the chime require an internet connection?
No. The notification sound is generated directly by the browser's Web Audio API — no external audio files are downloaded. It works fully offline.
How are rounds counted?
A round is counted only when a work session counts down to zero naturally. Manually skipping a session does not count as a completed round. Every 4 rounds, the next break automatically becomes a long break.
Your Project Is Not Failing Because You Are Slow: Try This Free Schedule Planner
Too many tasks, shifting deadlines, and constant delays? This guide shows how a free schedule planner helps you turn chaotic work into an executable roadmap your team can actually follow.
The Psychology of Procrastination: Why You Keep Putting Things Off (And What Actually Helps)
Procrastination isn't laziness — it's an emotion regulation strategy. This article explains the five psychological mechanisms behind chronic procrastination, what it actually costs you, and six evidence-based approaches that reduce it, including lowering the activation threshold, designing your environment, and making deadlines visible.
The Pomodoro Technique: Why 25 Minutes Is the Ideal Focus Interval
The Pomodoro Technique is a time management method built around 25-minute focused work sessions. This guide explains the cognitive science behind it, how to implement it correctly, common variations, and why breaking time into sprints outperforms "just pushing through."
World Clock Complete Guide: Time Zones, UTC, Daylight Saving Time, and Cross-Timezone Communication
Time zones are the invisible barrier in global collaboration. This guide explains UTC vs. GMT, how Daylight Saving Time works, the IANA time zone database, and practical tips for scheduling meetings and avoiding deadline mix-ups across time zones.
Date Countdown Guide: How Date Difference Calculation Works, Timezone Handling, and Practical Use Cases
Date countdown and time difference calculations seem simple but involve leap years, timezones, and daylight saving time. This guide explains the math behind date differences, common pitfalls, and how to handle them correctly in JavaScript and PHP.
BMI, BMR & TDEE Explained: The Three Core Fitness Metrics
Confused by BMI, BMR, and TDEE? This guide breaks down each metric's formula, normal ranges, and limitations — giving you a practical foundation for managing your health without getting lost in the numbers.