Shortcuts: Space start/pause · L lap · R reset · F full screen · P PiP/float · M mute
Results
Export result
How to use
Follow these steps to get a result
Press Start (or Space) to begin timing. The clock uses wall-clock timestamps so it stays accurate even if the tab is inactive.
Press Lap (or L) while running to record a split. Fastest and slowest laps are highlighted.
Pause, resume, or reset at any time. Lap history survives an accidental page refresh.
Use full screen, picture-in-picture, or floating mode, then export results as text, CSV, or PDF.
Features
What this tool includes
Millisecond precision
Lap and split times
Keyboard shortcuts
Full-screen mode
Picture-in-picture / floating window
Export (Copy / CSV / Text / PDF)
Local history persistence
Keep screen awake while running
Mobile vibration feedback
FAQ
Common questions about this tool
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Time zone rules come from the IANA time zone database; daylight saving changes are applied automatically. Methodology · Data sources