Full Screen Stopwatch
Large-display stopwatch with millisecond precision and lap counter. Click the button below to expand to full screen.
Classroom ReadyProjector FriendlyLap CounterKeyboard Shortcuts
High-Precision Timing
00:00.00
00:00.00
Minutes : Seconds . Centiseconds
Space Start/PauseL LapR Reset
Ready to Start
Pro Tips & Features
⚡Millisecond precision using the browser Performance API
🏃♂️Record unlimited laps with fastest/slowest/average analysis
💾Your session auto-saves — laps survive a page refresh
📱Works offline and continues timing in background tabs
⌨️Keyboard shortcuts: Space, L, R for hands-free timing
📊Export lap data as CSV for analysis in Excel or Sheets
Perfect For
🏫
Classrooms & Teachers
Project onto the whiteboard for timed activities, exams, and class exercises. Full screen fills the display for easy reading from any seat.
🏃
Sports Coaching
Time athletes, record laps, and track split times. The large display is easy to read from the field or track.
🎤
Presentations & Events
Keep speakers and presenters on schedule. A clean, high-contrast display that works on any projector.
🔬
Labs & Research
Millisecond precision for scientific timing. Keyboard shortcuts (Space, L, R) let you time without touching the mouse.