Online Stopwatch with Laps

This stopwatch counts up from zero and shows hours, minutes, seconds and hundredths of a second. Press Start when something begins, Lap each time you want to record a section, and Stop when it ends.

It reads the system clock rather than counting its own ticks, so the time stays correct even if the tab sits in the background or your phone screen turns off. When you come back, the display simply catches up.

How to use this tool

1. Press Start or the Space bar to begin timing.
2. Press Lap (or L) at each checkpoint. Every lap is added to the table with its own time and the running total.
3. Press Stop (Space) to freeze the clock. Start resumes from where it stopped.
4. Press Reset (R) to return to zero, or Copy laps to put the table on your clipboard as plain text.

Lap time and split time

The lap table has three columns. The lap time is how long that one section took, measured from the previous lap press. The split is the total elapsed time at the moment you pressed Lap.

The fastest lap and the slowest lap are marked automatically, which makes it easy to see whether your pace faded or whether one section stood out.

Good uses

Timing laps in a pool or on a track, measuring how long each speaker takes in a meeting, recording the stages of a recipe, or timing an experiment where you need several readings from one run.

Because laps copy out as text, you can paste them into a message, a note or a training log. Nothing is uploaded; the times stay in your browser.