A simple, accurate stopwatch with lap timing, millisecond precision and keyboard shortcuts. The ChrysoKit Stopwatch runs in your browser and stays accurate when the tab is hidden.
Why use it
No app to install. No ads. The keyboard shortcuts make it faster than tapping a phone screen.
How to use the Stopwatch
- Press Start (or hit the Space key).
- Press Lap to capture a checkpoint.
- Press Stop to pause; Start again to resume.
- Press Reset to wipe the slate.
Features worth knowing
Millisecond precision
Time to the millisecond, useful when small differences matter.
Lap capture
Capture intermediate times without stopping the master clock.
Keyboard shortcuts
Space to start/stop, L to lap, R to reset. Much faster than chasing buttons.
Background-safe
The timing stays accurate even when the tab is hidden; many phone stopwatches drift when backgrounded.
Pro tips
- Use Lap rather than Stop and Start. The total time stays accurate that way.
- On phones, keep the screen on; some browsers throttle background tabs aggressively.
- For very long timings (hours), the Countdown Timer is more deliberate than the Stopwatch.
Privacy first. The Stopwatch runs entirely in your browser. Nothing is uploaded.
Bookmark the Stopwatch for cooking, exercise, presentations, and any other time you want a clean count without a phone in your hand.
Open the tool: Stopwatch →