A precise free online stopwatch with laps, split times, editable notes, lap statistics, fullscreen mode and keyboard shortcuts.
Runs locally in your browser — no account or API required.
| # | Lap time | Total time | Note |
|---|
Use the stopwatch for workouts, experiments, presentations, games, work sessions or any activity where you need a clean running clock. Every lap stores both its split time and total elapsed time. Add a note to each lap so the results still make sense later.
Press New lap while the stopwatch is running or paused. Notes are saved automatically in your browser together with the current stopwatch session. Fastest, slowest and average lap values update as you add laps.
Yes. The current elapsed time, running state, laps and lap notes are stored locally and restored after a refresh.
Yes. Every lap has its own editable note field and changes are saved automatically in your browser.
Space starts or pauses, L creates a lap, R resets after confirmation when needed, and F toggles fullscreen.