Stopwatch & Timer

Precise stopwatch with laps and countdown timer with presets.

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Frequently Asked Questions

What is an Online Stopwatch?

An online stopwatch is a browser-based timing tool that measures elapsed time with precision down to centiseconds (hundredths of a second). Unlike physical stopwatches, this digital version includes lap recording, a countdown timer mode, and quick presets. It runs entirely in your browser with no app to install, no account required, and works on any device with a modern web browser including smartphones and tablets.

When to Use a Stopwatch or Timer

  • Timing workouts, intervals, and rest periods during exercise
  • Measuring cooking and baking times with the countdown timer
  • Recording lap times for running, swimming, or cycling splits
  • Timing presentations, speeches, or meeting segments
  • Benchmarking tasks and tracking time for productivity analysis
  • Setting reminders for breaks, medication, or scheduled events

How It Works

Switch between Stopwatch and Countdown Timer tabs. The stopwatch counts up from zero and supports lap recording. The countdown timer lets you set hours, minutes, and seconds, with quick presets for common durations. An audio alert plays when the countdown reaches zero. All timing uses high-resolution browser APIs for accuracy. Everything runs client-side with no server interaction.