Online Stopwatch
100% PrivateProductivity ToolsTime anything with centisecond precision and record laps as you go.
Runs entirely in your browser. Your input is not uploaded to Ovatly or anywhere else.
No laps yet. Press Start, then Lap at each split.
- 1Press Start when the activity begins.
- 2Press Lap at each split; every lap is added to the table with its own time and the total.
- 3Press Pause to hold the clock, Resume to continue, or Reset to clear everything.
- 4Press Export laps as CSV to download the lap table.
Start the stopwatch and press Lap as each lap ends: lap 1 at 01:32.40, lap 2 at 03:10.05 and lap 3 at 04:44.90. The table shows lap times of 01:32.40, 01:37.65 and 01:34.85 next to those totals, so the slowest lap (lap 2) is obvious at a glance. The CSV export contains exactly these rows.
- Elapsed time is computed from timestamps, not by counting screen updates, so display throttling in a background tab does not change the result when you return.
- Times are shown to the centisecond (hundredth of a second); the underlying clock is your device clock.
- Nothing is saved: closing or refreshing the tab clears the stopwatch and its laps, so export first if you need the record.
It reads your device clock directly, so it is as accurate as that clock. The display refreshes about 30 times per second, which is why the last digit moves smoothly, but the recorded lap times come from the timestamps themselves.
About this tool
The Online Stopwatch times anything in the browser with centisecond precision: exercise sets, cooking, practice drills, billable work. Record laps as you go and each lap shows both its own duration and the running total. When you finish, the whole lap table exports to a CSV file you can open in a spreadsheet.
Related tools
Part of Ovatly's free tools in Productivity Tools.