Online Stopwatch

A high-precision stopwatch with analog + digital display

Track laps, go fullscreen, and use keyboard shortcuts. Share display settings with a URL.

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Highlights

Stopwatch

00:00:00.00
Precision: Centiseconds
Space: Start/Stop L: Lap R: Reset F: Fullscreen ?: Help

Settings URL only stores display options (timer state and laps are not shared).

Lap Lap time Split time

No laps yet.

Lap timing with export-ready results

Use this stopwatch when you need continuous elapsed time plus lap splits you can review later. It supports precision changes, lap history, fullscreen display, and CSV/JSON export, so it works for drills, practice logs, and timing checks. Hidden tabs may refresh less often visually, but the measured elapsed time keeps running.

Best-fit uses

What to remember

FAQ

Will the timer drift?

Display updates may throttle under heavy load, but the timing itself is measured with a high-precision timer.

Does the share URL include the running state?

No. Only display settings are shared. The running state and lap data are not included.

Can I export lap history?

Yes. Export laps as CSV or JSON, or copy a TSV table for notes and spreadsheets.

Does the stopwatch keep lap data after refresh?

If save-laps is enabled, the same device can restore recent lap data locally. Shared URLs do not include live lap history.

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How to use

Display updates may throttle on slower devices, but timing is handled with a high-precision timer.