Timer & Stopwatch
Free online countdown timer and stopwatch. Set any duration, track lap times, or use Pomodoro mode for productivity.
00:05:00
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About This Tool
What it does
A clean countdown timer and stopwatch. Set any duration, start, pause and reset. Works in the background while you use other tabs.
Who it's for
Students studying with the Pomodoro technique, cooks timing recipes, athletes timing intervals, presenters timing speeches.
Your privacy
Nothing is recorded or transmitted. The timer runs entirely in your browser.
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Method, limits and privacy
Countdown and Pomodoro modes use target timestamps to correct ordinary interval drift. Browser throttling, sleep, muted audio and closed tabs can delay or prevent updates and sound; do not rely on this page for medication, cooking hazards, industrial processes or other safety-critical timing.
Frequently Asked Questions
How does the countdown avoid interval drift?
The tool stores a target time and recalculates the remaining duration from Date.now on each update instead of subtracting a fixed amount every tick.
What happens when I pause and resume?
Pause stores the remaining duration. Resume creates a new target from that remainder, rather than restarting the original duration.
Will the alarm always fire while the tab is inactive?
Not necessarily. Browsers can throttle or suspend background tabs and devices can sleep, so this is a convenience timer rather than a safety-critical alarm.
What does Reset clear?
Each mode has its own reset. Countdown restores the chosen duration, stopwatch clears elapsed time and laps, and Pomodoro restores its work phase and session totals.
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