Stopwatch
Free online stopwatch. Measure elapsed time with millisecond precision, lap recording, and split times. Perfect for sports, study, and workouts.
About This Free Online Stopwatch
Our free online stopwatch measures elapsed time with millisecond precision. Start, stop, and record laps with split times and lap differences. The clear display shows hours, minutes, seconds, and hundredths. Perfect for tracking workout sets, timing presentations, measuring cooking intervals, or any activity that needs precise elapsed time measurement.
Features of Our Stopwatch
- Precise elapsed time to hundredths of a second
- Start, Stop, and Reset controls
- Lap recording with split times and lap differences
- Large, easy-to-read display
- Keyboard shortcuts (Space for Start/Stop, R for Reset)
- 100% free — no signup required
How to Use the Stopwatch
Using this tool is simple and requires no signup or registration. Follow these steps:
- Click Start to begin timing.
- Click Lap to record a split time without stopping.
- Click Stop to pause the stopwatch.
- Click Reset to clear all times and laps.
Frequently Asked Questions About Stopwatch
How precise is this stopwatch?
The stopwatch measures time to hundredths of a second (10ms precision). JavaScript timers typically have some drift over long periods, but for most practical uses under an hour, precision is excellent.
Can I use keyboard shortcuts?
Yes. Press Space to Start/Stop, R to Reset, and L to record a Lap.
Does it work on mobile?
Yes. The stopwatch is fully responsive and works on all devices with tap-based controls instead of click.
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