Stopwatch
Precise stopwatch with lap times, splits, and millisecond accuracy.
00:00:00.000
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Precise stopwatch with lap times, splits, and millisecond accuracy.
00:00:00.000
Accurate timing for sports, cooking, and productivity.
Record multiple splits during a single timing session.
Timer continues even when you switch browser tabs.
Large, easy-to-read display with simple controls.
A reliable stopwatch is essential for athletics, cooking, presentations, exams, and productivity techniques like the Pomodoro method. Our online stopwatch is always available, no app download needed.
Recording lap times helps track performance over intervals, whether for running laps, timing workflow steps, or measuring cooking durations.
Online stopwatches are great for practice but official competitions require certified timing equipment.
Closing the browser tab loses all data. Export lap times before closing.
Human reaction time (0.1-0.3 seconds) affects start/stop precision. For precise measurements, use automated triggers.
Heavy browser usage can cause timer drift. Close unnecessary tabs for best accuracy.
Our stopwatch uses high-resolution browser timers accurate to the millisecond. For official timing, dedicated hardware is recommended.
Yes, click the Lap button while the stopwatch is running to record split times without stopping the main timer.
Yes, the timer continues counting when you switch tabs. The display updates when you return.
You can copy all recorded lap times to your clipboard for pasting into a spreadsheet or document.
A lap time is the duration of one segment. A split time is the total elapsed time at each point. Our tool shows both.