Online Stopwatch

Time anything to the hundredth of a second and record laps.

00:00.00

Laps

LapLap timeTotal

Space starts or stops, L records a lap. ▲ marks the fastest lap and ▼ the slowest.

How to use the stopwatch

Press Start to begin and Stop to pause; Resume continues from the same time. While it runs, press Lap to record a split. The table shows each lap time and the running total, and marks your fastest and slowest laps once you have three or more. Reset clears everything.

Keyboard shortcuts

Space starts and stops. L records a lap.

Good uses

Need a countdown instead? Use the online timer.

Frequently asked questions

How accurate is the stopwatch?

It reads your device clock every few milliseconds, so it is accurate to the hundredth of a second shown. Button presses add a small human delay.

Does it keep running in another tab?

Yes. It measures real elapsed time, so the total stays correct even if the tab was in the background.