Online Stopwatch
A clean, free stopwatch with lap times. Press Start (or the spacebar) to begin.
How the stopwatch works
This is a browser-based stopwatch that displays elapsed time to the hundredth of a second — nothing to install. Click Start to begin timing and Stop to pause. Hit Lap to record a split without stopping the clock — each lap shows both the lap time and the total elapsed time, newest at the top. Reset clears everything back to zero.
Displayed precision depends on your device and browser and does not make this suitable for official sports timing, scientific measurement, medical use, or other applications requiring calibrated equipment. The display can also update less often in a background tab — see browser timing limitations.
Keyboard shortcuts: Space start/stop · L lap · R reset. Handy for workouts, classrooms, science experiments, cooking and games.
Need to count down to a length of time instead? Use the online timer. Counting down to a date or event? Make a countdown.
Stopwatch FAQ
Is the online stopwatch free? Yes — free, with no sign-up and no app to install.
Does it record lap and split times? Yes — tap Lap to record a split without stopping the clock; each lap shows the lap time and the total elapsed time.
Can I control it with the keyboard? Yes — Space starts and stops, L records a lap, and R resets.