Online Stopwatch

Sometimes you need to measure how long something takes — a run, a task, a drill, an experiment, a speech rehearsal — and a stopwatch is the tool. This one runs in your browser with no app to install, times to hundredths of a second, and records laps, which is what separates a useful stopwatch from a bare timer.

The lap feature captures a split each time you press it, building a table that shows each lap's individual time and the running total. When you have more than one lap, the fastest and slowest are highlighted automatically — immediately useful for interval training, where you want to see which rounds you're fading on, or any repeated task where consistency matters. The most recent lap sits at the top so you're not scrolling during activity.

Accuracy is the quiet feature here: the stopwatch accumulates elapsed time using the browser's high-resolution clock, so pausing and resuming is exact and there's no cumulative drift over long sessions. Start, pause, resume, lap and reset are all one tap. Free, private, no signup — and once loaded, it works offline.