Stopwatch with Laps
A stopwatch that records lap times as you go.
Timing with splits
A lap stopwatch times an overall duration while also recording individual laps or splits along the way, so you capture each segment as well as the total. This provides that in your browser, for timing anything made of repeated segments.
Start the stopwatch and record laps as you go.
Why lap times matter
Recording laps turns a stopwatch from a single-number tool into a way to analyse performance, because the pattern of the splits tells you far more than the total. In running or swimming, the lap times reveal whether you started too fast and faded, or paced evenly — a common and valuable insight, since even pacing is usually more efficient than a fast start and slow finish. The same applies to any repeated activity: timing each round of a workout, each attempt at a task, or each segment of a process shows where the time actually goes and how consistency holds up. The total alone hides all of this. Being able to capture each lap without stopping the overall clock is what makes a stopwatch genuinely useful for improvement rather than just measurement.
Frequently asked questions
What does recording laps add over a plain stopwatch?
It captures each segment as well as the total, so you can see the pattern of splits, which reveals far more than the overall time alone.
What do lap times reveal?
Your pacing and consistency — whether you started too fast and faded or held an even pace, which is usually more efficient.
Is anything uploaded?
No. It runs entirely in your browser.