Online timer and stopwatch
Whether you need a countdown timer for cooking, workouts, presentations, or exams, or a stopwatch for timing laps, tasks, or experiments, this tool has you covered. Set any duration from 1 second to 99 hours, and an audio alarm will alert you when the countdown reaches zero. The stopwatch records unlimited lap times for easy comparison.
Audio alarm
The countdown timer uses the Web Audio API to generate a beep sound when time is up — no external audio files needed. Make sure your device volume is turned up and your browser allows audio playback. The alarm works on all modern browsers including Chrome, Firefox, Safari, and Edge.
Runs in your browser
Everything is processed locally using JavaScript. No data is sent to any server. The timer continues running as long as the tab is open. Note that browser tabs may throttle timers when in the background — keep the tab visible for the most accurate timing.