Online Stopwatch — Precision Digital Lap Stopwatch
Online Stopwatch provides millisecond-precise time tracking in your web browser. Start, pause, split laps, and export lap intervals for workouts, cooking, and productivity.
How to Use
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Start Timing
Click the "Start" button to begin timing with high-resolution performance.now() precision.
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Record Split Laps
Hit "Lap" while running to log split times and overall elapsed times into the laps table.
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Export & Reset
Copy lap times to your clipboard or reset the counter to zero when finished.
Whether timing video speedruns, recording podcast segments, or tracking Pomodoro sessions, our Online Stopwatch relies on browser hardware clocks to prevent frame-rate drift.
Featuring large high-contrast digits and keyboard-friendly controls, it works seamlessly across desktop and mobile devices.
Who Uses This
Fitness & HIIT Workouts
Time intervals, track circuit rounds, and record split lap times at the gym.
Speedrunning & Gaming
Measure trial times, level completion, and challenge runs with millisecond precision.
Work & Productivity
Track video editing durations, client billable hours, and livestream speech limits.