⏱️ Online Stopwatch
A precise online stopwatch with lap tracking. Start, stop, and record lap times down to the millisecond.
📖 About This Stopwatch
This online stopwatch provides millisecond-precision timing right in your browser. It's perfect for timing workouts, cooking, presentations, games, science experiments, or any activity that requires accurate time tracking. The lap feature lets you record split times without stopping the main timer.
The stopwatch uses your browser's high-resolution timer (performance.now()) for maximum accuracy. It works on any device — desktop, tablet, or mobile — without requiring any downloads or installations. Your lap times are displayed in a table with the best (fastest) and worst (slowest) laps highlighted.
❓ Frequently Asked Questions
This stopwatch uses the browser's performance.now() API which provides sub-millisecond precision. While browser-based timers may have slight variations (typically within ±1ms), it's more than accurate enough for most practical timing needs.
Yes! The stopwatch tracks elapsed time using timestamps, so it remains accurate even if you switch to another tab or minimize the browser. The display will update correctly when you return.