Pomodoro Timer: Free Online Focus & Productivity Timer

The default cycle

Customize durations in Settings. Press Space to start/pause, R to reset.

How the timer behaves

Hit Start and the ring begins counting down from your work duration, changing color between work, short break, and long break so you can tell your current mode from across the room. When a session ends, a sound plays, the timer flips automatically to the next mode in the cycle, the page title updates so you can see the countdown from a background tab, and your completed-session count ticks up. Every fourth work session routes to a long break instead of a short one, matching Cirillo's original structure. Open Settings any time to change how long each phase runs. Since changing settings resets the current phase to the new duration, it's best to adjust between sessions rather than mid-countdown.

Why it works

• ⏱️Time-boxing creates urgency — knowing you only have 25 minutes makes it easier to start and stay on task instead of circling a large task without ever beginning.
• 🧠Regular breaks prevent mental fatigue and improve focus and retention over long sessions, since sustained attention degrades well before most people notice it.
• 📵Each interval becomes a commitment to ignore distractions — notifications, messages, multitasking — for just 25 minutes, a short enough window that saying no feels achievable.
• 📈Counting completed sessions gives you a concrete measure of how much deep work you're actually doing each day, rather than relying on a vague sense of having been busy.

Tips for getting the most out of it

Pick a single task before you press Start, and write it down somewhere visible so the session has a clear target rather than becoming a stretch of unfocused time with a timer attached. Treat the break as non-negotiable. Skipping it to keep working defeats the purpose of the technique, since the recovery during breaks is what keeps the next session sharp. If a task runs longer than one interval, that's normal. Let the timer complete, take the short break, and start a fresh session rather than pushing through past the buzzer. If 25 minutes consistently feels too short or too long for the kind of work you do, adjust the work duration in Settings. The technique's value comes from the rhythm of focused work and recovery, not from the specific number of minutes.

Runs privately in your browser

Your session count, settings, and current mode live in your browser's local storage, not on a server. Closing the tab and coming back later restores your customized durations without asking you to sign in or set anything up again. Nothing about how you use the timer, how many sessions you complete, or when you use it is transmitted anywhere, and there's no account tying your usage history to an identity you have to manage.

Common use cases

Students use it to break a long study session into manageable blocks between which they can stretch, refill water, or check messages without derailing the whole afternoon. Developers use it to timebox debugging sessions, since a hard stop forces a decision point rather than an open-ended rabbit hole. Writers use it to push through a first draft, since the ticking clock makes it easier to write badly on purpose and fix the prose later. Anyone doing a task they'd rather avoid can use a single session as a low-commitment way to start, since 25 minutes is short enough that starting doesn't feel like a big decision. Teams running a shared focus block sometimes sync sessions together, comparing completed counts at the end of the day as a lightweight way to see how the group's attention held up.