Online Stopwatch
A free online stopwatch with fullscreen mode, lap tracking, keyboard shortcuts, and a clean digital display.
Features
Keyboard Shortcuts
Full keyboard control. Space to start/pause, R to reset, L to record laps.
Fullscreen Mode
One-click fullscreen for presentations, classrooms, and focused work sessions.
Sound Alerts
Multiple alert sounds to choose from. Adjustable volume for any environment.
Flash Alert
Screen flashes when the timer ends. Great for silent environments.
Lap Recording
Record split times while the stopwatch is running. Track your progress easily.
Dark Theme
Switch between dark and light themes. Easy on the eyes, day or night.
FAQ
Yes. Use the fullscreen button in the top-right corner to expand the stopwatch for meetings, classes, and workouts.
Yes. The stopwatch includes lap tracking so you can record split times while the timer is running.
Yes. The stopwatch supports quick keyboard controls for start, pause, reset, and lap recording.
Yes. OpenStopwatch is completely free to use with no ads, no sign-up, and no hidden fees.
No. It runs directly in your web browser. Just open the page and start timing — no app or extension needed.