Pomodoro timer with focus cycles, short and long breaks, customizable presets, a sound alert and a session counter, right in your browser.
The Pomodoro Technique, created by Francesco Cirillo in the late 1980s, breaks work into focus blocks (traditionally 25 minutes) separated by short breaks, with a long break every four blocks. The idea is simple: a defined interval reduces procrastination, creates a healthy sense of urgency and protects your rest. This timer implements the full cycle, focus, short break and long break, and advances automatically from one phase to the next, playing a sound alert at the end of each. You can use the ready-made presets (25/5, 50/10 and 15/3) or customize the duration of each phase and how many focus sessions precede a long break. The session counter and cycle dots show your progress for the day. Because the timer is deadline-based rather than a per-second tick, it stays accurate even if the tab goes to the background.
The timer always follows the same sequence: a focus block, then a break. After each focus, it chooses between a short break and a long break by counting how many focus sessions you've completed, every time you hit the number set in "Sessions per long break" (4 by default), the next break is the long one instead of the short one. When the break ends, it returns to focus, and the session counter tracks your progress.
Behind the progress ring, time isn't counted by adding "one second" on every tick; it's computed from the moment the phase is due to end. That matters because browsers throttle background tabs: if you switch away, a simple counting timer would drift, but the deadline-based one stays exact and shows the correct remaining time when you return. The alert at the end of each phase is a beep generated locally with the Web Audio API, with no files to download.
Example 1, classic cycle (25/5/15, long break every 4): you do 25 min of focus, 5 of break, and repeat. When you finish the fourth focus session, the long 15-minute break replaces the short one. In total, that full cycle adds up to about 130 minutes, 100 of focus (4 × 25), 15 of short breaks (3 × 5) and 15 of the long break.
Example 2, custom (the Long 50/10 preset): with a 50-min focus, a 10-min short break and a long break every 3 sessions, the timer delivers the long break (30 min) right after the third focus. That's a better rhythm for tasks that need deep flow, where breaking every 25 minutes would get in the way more than it helps.
It's useful for studying, writing, coding, reviewing, clearing an inbox, or any task that benefits from defined blocks with predictable rest. Adjusting the durations lets you adapt the method to your kind of work, short blocks for light, repetitive tasks, long blocks for work that needs deep concentration.
Two things to remember: the session counter and settings only last while the page is open and there's no login, so reloading resets the day's history. And the Pomodoro Technique is a time-management method, not a promise of results: it helps structure focus and rest, but the gains depend on how you apply it to your routine.
Paste the code into your HTML and the tool shows up on your page, without J-Kit's navigation and ads. It still runs in the browser of whoever visits your site.
<iframe
src="https://jkit.tools/embed/en-US/pomodoro-timer"
width="100%"
height="600"
style="border:0"
loading="lazy"
title="Pomodoro Timer"
></iframe>These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.
It's a time-management method that alternates periods of intense focus (usually 25 minutes) with short breaks. Every four focus blocks, you take a longer break. Each block is a “pomodoro”, named after the tomato-shaped kitchen timer used by Francesco Cirillo, who created the technique in the late 1980s.
The timer runs entirely in your browser, with no login and no data sent to any server.