How do I use the online stopwatch?

Press Start to begin timing, Lap to record a split, Stop to pause and Reset to clear. On a keyboard, Space starts and stops, L records a lap and R resets.

How accurate is the stopwatch?

It shows hundredths of a second and uses your browser’s high-resolution clock. Human reaction time when pressing the button is usually far larger than the timing error.

What do the lap colours mean?

With two or more laps, the fastest lap is highlighted in green and the slowest in red.

No. Laps stay only on this page and are cleared when you reset or close it.

Online Stopwatch

Time anything to the hundredth of a second, with lap times.

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Shortcuts: Space = start/stop · L = lap · R = reset

Laps appear here. Press Lap while the stopwatch runs.

A free stopwatch with lap times

This online stopwatch measures elapsed time in minutes, seconds and hundredths. Record laps for running, swimming or interval training and compare each lap with the total time.

Timing keeps going when you switch tabs. Want to count down from a set time instead? Switch to the online timer with alarm.

Stopwatch FAQ

How do I use the online stopwatch?: Press Start to begin timing, Lap to record a split, Stop to pause and Reset to clear. On a keyboard, Space starts and stops, L records a lap and R resets.
How accurate is the stopwatch?: It shows hundredths of a second and uses your browser’s high-resolution clock. Human reaction time when pressing the button is usually far larger than the timing error.
What do the lap colours mean?: With two or more laps, the fastest lap is highlighted in green and the slowest in red.
Are my laps saved?: No. Laps stay only on this page and are cleared when you reset or close it.