Online Stopwatch

A clear, accurate stopwatch

This online stopwatch measures time in minutes, seconds and hundredths of a second. The ring sweeps round once every minute, like the seconds hand on a sports watch, and the pendulum swings while it runs. It keeps time from your device clock, so it stays accurate even in a background tab.

Press Lap (or L) to record a split without stopping. Each lap shows its own time and the running total, newest first, so you can compare laps at a glance. Press Pause to stop the clock and Start to carry on; Reset clears everything.

What people use it for

Timing runs, swims and laps of the oval, practice speeches and presentations, science experiments in class, how long a task really takes, puzzle solves, reading speed or cooking steps. For counting down instead of up, use the online timer, or set up rounds with the interval timer.