Time
Stopwatch & Lap Counter
Millisecond-precision stopwatch. Record laps and compare your fastest and slowest times.
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Stopwatch with Millisecond Precision
No app needed — a full-precision stopwatch right in your browser. Use it to time running laps, track presentation segments, or measure any activity with sub-second accuracy. The fastest and slowest laps are highlighted automatically so you can compare your performance at a glance.
How to Use the Stopwatch
Basic Controls
- Start / Stop; starts or pauses the stopwatch. A paused stopwatch resumes from where it left off.
- Lap; when clicked while running, saves the elapsed time as a lap and continues counting without resetting.
- Reset; clears all elapsed time and lap history.
Lap Comparison
Once more than one lap is recorded, the fastest lap is highlighted in green and the slowest in red. This lets you instantly see which lap was your best and which was your slowest.
Use Cases
Running trainingRecord each lap and calculate average lap time
Presentation timingMeasure time between sections
CookingSave multiple steps as individual laps
Games and competitionsTrack time on a lap-by-lap basis
Pomodoro techniqueManually time 25-minute work blocks
Tips for Best Results
- Press the Lap button at the end of each running lap; the total timer keeps running uninterrupted.
- To save your results, take a screenshot or copy the lap list.
- If you accidentally close the browser tab, the lap history is lost — note down important measurements as you go.
- Refreshing the page or closing the tab resets the stopwatch; for long sessions on mobile, make sure your screen does not turn off.