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Online Stopwatch

Digital stopwatch with millisecond precision & lap split timer — free & instant

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Accurate Online Stopwatch for Workouts, Running & Productivity

Whether you're timing track sprints, swimming intervals, Rubik's cube solves, presentations, or tracking task duration, EasyToolz Stopwatch offers high-precision timing with detailed split lap logging.

  1. Start the timer: Click "Start" or tap your spacebar to begin counting with hundredth-of-a-second accuracy.
  2. Record lap splits: Click "Lap" to record individual lap durations while the overall timer continues smoothly.
  3. Review split records: View your lap table to examine split improvements and pacing changes.

Key Advantages of EasyToolz Stopwatch

  • Drift-Free Timestamp Sync: Because time is measured against system epoch timestamps rather than simple interval ticks, the stopwatch never loses accuracy even if backgrounded.
  • Keyboard Shortcuts: Spacebar to Start/Pause, 'L' to record Lap splits, and 'R' or 'Escape' to Reset.
  • Mobile-First Interface: Large touch targets make starting and recording laps effortless on smartphones during sports practice.

Explore more time utilities: Countdown Timer, Date Calculator, Age Calculator.

Frequently Asked Questions

How accurate is this online stopwatch?

The stopwatch uses the browser's high-resolution performance.now() and requestAnimationFrame loop, providing sub-millisecond precision.

How does the lap timer work?

While the stopwatch is running, click the "Lap" button. It records both the current individual lap duration (split) and total cumulative elapsed time in a scrollable log.

Can I control the stopwatch with my keyboard spacebar?

Yes! Pressing the Spacebar starts and pauses the timer, while pressing "L" logs a new lap.

Does the stopwatch continue if I switch browser tabs?

Yes! Elapsed time is calculated using timestamps against the system clock, ensuring zero drift when switching tabs or locking your device.