Stopwatch
High-precision stopwatch with lap time recording
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About Stopwatch
This free online stopwatch works entirely in your browser. In addition to basic start, stop, and reset controls, it includes a lap time recording feature. Time is displayed in hours:minutes:seconds.milliseconds (00:00:00.000) format for high-precision measurement.
Lap times are shown in a list with automatically calculated split times (time elapsed since the previous lap). The fastest lap is highlighted in green and the slowest lap in orange, allowing you to gauge your performance at a glance.
Ideal for sports training, cooking, study time management, presentation timing, and many other everyday uses. Keyboard shortcuts (Space: start/stop, L: record lap, R: reset) enable more efficient operation.
All data is processed locally in your browser with no server communication. Accessible from any device including smartphones, tablets, and PCs.
How to use Stopwatch
- Press the 'Start' button to begin timing
- Press the 'Lap' button during measurement to record a lap time
- Press the 'Stop' button to pause. Press 'Start' again to resume
- Press the 'Reset' button to clear all times and lap records
Benefits of Stopwatch
- No installation needed — works instantly in your browser
- High-precision measurement down to milliseconds
- Automatic lap and split time calculation
- Completely free with no registration or ads
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