Stopwatch Online

Free Online Stopwatch

This free stopwatch online provides millisecond-accurate timing with unlimited lap recording and automatic fastest/slowest lap highlighting. No download or app required — open the page and click Start. It also includes a full countdown timer with quick presets from 1 minute to 1 hour, a visual progress bar, and an audio alert when time is up.

Whether you need a stopwatch for sports training, cooking, studying with the Pomodoro technique, timing a presentation, or running intervals — this online stopwatch works in any modern browser on desktop and mobile.

How to Use This Online Stopwatch

• Start / Pause: Click Start to begin. Click Pause to pause without resetting. Click Start again to resume exactly where you left off.
• Lap: Click Lap while running to record a split time. Fastest lap is highlighted green, slowest in red automatically.
• Reset: Stops the timer and returns to zero. Lap times stay until you click Clear laps.
• Countdown Timer: Switch to the Countdown tab, enter your time or click a preset, then click Start. An audio beep plays when it reaches zero.
• Keyboard shortcuts: Space = Start/Pause, L = Lap, R = Reset.

Stopwatch Online — Frequently Asked Questions