Stopwatch & Timer
Online stopwatch with lap times, countdown timer, and Pomodoro productivity timer. All in one tool.
About the Stopwatch & Timer
A fast, reliable online stopwatch and countdown timer with lap tracking, a Pomodoro preset, and a clean interface that stays out of your way. Whether you are timing a workout, managing a presentation, running a cooking countdown, or structuring a focused work session, everything you need is available without installing any app or creating an account.
The Pomodoro mode automatically alternates between 25-minute focus blocks and 5-minute breaks — a proven productivity technique used by students and professionals worldwide. The lap feature lets you record split times during a single run, and the countdown alarm notifies you when time is up so you never have to watch the clock yourself.
How to use the Stopwatch & Timer
- Choose a mode from the top tabs: Stopwatch, Countdown Timer, or Pomodoro.
- For Stopwatch: click 'Start' to begin timing. Click 'Lap' to record a split time without stopping. Click 'Stop' to pause and 'Reset' to clear.
- For Countdown: enter your desired hours, minutes, and seconds, then click 'Start'. An alert sounds when the timer reaches zero.
- For Pomodoro: click 'Start Session' to begin a 25-minute focus block. The timer automatically switches to a 5-minute break and cycles.
- Use the keyboard shortcut (Space bar) to start and stop quickly without reaching for the mouse.
Key features
- Three modes in one: Stopwatch, Countdown Timer, and Pomodoro focus timer.
- Lap recording stores unlimited split times during a single stopwatch session.
- Audible alert when countdown or Pomodoro segment completes.
- Runs in an open browser tab — works in the background while you switch apps.
- Millisecond precision display for sports and presentation timing.
- No account, no download, no ads interrupting your session.
Frequently asked questions
Will the timer keep running if I switch to another tab?
Yes. The timer continues running in the background as long as the browser tab remains open. The display updates when you switch back. Some browsers may throttle inactive tabs, which can cause minor drift over very long sessions.
What is the Pomodoro Technique?
Pomodoro is a time-management method developed by Francesco Cirillo. You work with full focus for 25 minutes (one 'Pomodoro'), then take a 5-minute break. After four Pomodoros, you take a longer 15-20 minute break. Research shows this pattern reduces mental fatigue and improves sustained concentration.
Can I set a custom duration for the countdown timer?
Yes. Enter any combination of hours, minutes, and seconds before starting the countdown. There is no maximum limit, so you can set a timer for several hours if needed for long events or slow-cooker recipes.
How do lap times work?
In Stopwatch mode, pressing 'Lap' records the current elapsed time as a split and continues the clock without resetting. Each lap shows the cumulative time and the time elapsed since the previous lap, letting you compare splits across intervals.
Does the timer alert me when it finishes?
Yes. When a countdown or Pomodoro segment ends, the tool plays an audible chime and displays a visual notification. Make sure your browser tab is not muted and that you have not blocked notification sounds for the site.
The stopwatch and timer run entirely in your browser — no timing data, session logs, or personal information are sent to any server.