How to use the Online Stopwatch
- Press Start or Space.
- Press Lap or L to record a lap — the fastest is marked green, the slowest red.
- Press Stop to pause and Start to continue; Reset clears everything.
- Copy the laps or download them as CSV.
An accurate stopwatch that survives a closed tab
The stopwatch measures against your device clock rather than counting ticks, so it stays accurate even when the tab is in the background or the computer is busy. The start time is saved in your browser: close the tab, come back later, and it shows the real elapsed time.
Laps and splits
Each lap shows its own time and the running total (the split). The fastest lap is highlighted in green and the slowest in red — handy for running intervals, swimming lengths, speeches or timing a build. Download the list as CSV to keep it in a spreadsheet.
Counting down instead? Use the Countdown Timer. To log hours on projects, use the Time Tracker.
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Tools that pair well with the Online Stopwatch
- Pomodoro Timer — Work in focused 25-minute sessions with short breaks, and a long break every four.
- World Clock — See the current time in cities around the world side by side, with the time difference from you and whether it’s day or night.
- Click Speed Test (CPS) — How fast can you click?
- Online Notepad — A simple notepad in your browser that saves as you type.