Stopwatch & Lap Timer
Precision stopwatch with centisecond accuracy via requestAnimationFrame. Lap recording with split times. Fastest and slowest laps auto-highlighted. Pause / resume preserves elapsed time.
What powers the Stopwatch / Lap Timer
HH:MM:SS.CC display (centisecond accuracy)
Pause / resume preserving elapsed time
Lap recording with split times
Fastest lap (green) and slowest lap (red) highlighted
Reset clears everything
requestAnimationFrame for smooth display
Why the Stopwatch / Lap Timer is different
Browser-native
The Stopwatch / Lap Timer runs entirely in your browser. Input is processed locally — never uploaded, never logged, never cached anywhere outside your device.
No artificial limits
No daily quotas, no character ceilings, no "upgrade for more" walls. Every feature is the complete feature — the same on the first use as the thousandth.
Production-grade quality
Built to the same engineering bar as paid SaaS tools — accurate algorithms, audited logic, responsive design and accessibility-tested interactions.
Common use contexts
- Workouts and exercise sets
- Track / running training laps
- Cooking — timing parallel tasks
- Speed-running games
Private and secure
Zero upload
All processing happens in your browser. Input is never transmitted, logged or cached.
Works offline
Once the page loads, the tool runs without an internet connection. No network calls happen during use.
No tracking
No accounts, no cookies for tool state. Only aggregate analytics count visits at the page level.