The stopwatch measures elapsed time from the moment you press start. Use it for laps at the domain, a training circuit, a classroom activity, a rehearsal, a workshop process, or a comparison between two regular commutes. The running display lets you observe duration without first deciding when the session should end.
Start, pause, continue, and reset with the controls on the page. Record a lap when you need an intermediate mark while the main total keeps moving. Before beginning a formal test, practise the controls once and decide whether pauses count; consistent rules matter more than a falsely precise result.
Keep this tab open and prevent the device from sleeping during a long measurement. Browser reloads, a flat battery, or closing the page may lose the current state. Write down important results elsewhere, and use dedicated calibrated equipment where sporting rules, science, employment records, or safety procedures require it.
Elapsed time is different from a wall-clock appointment. A stopwatch can compare the walk to a station on a dry morning with the same route in rain, but it cannot predict the next bus or account for a cancellation. Use live timetables and road information for travel decisions, particularly for ferries and less frequent regional services.
The September and April clock changes do not normally alter a continuously measured interval, though the device and browser still control operation. If a session spans many hours or crosses midnight, note the start date and local time separately. This is especially useful when sharing a result with someone on the other side of the International Date Line.
Use lap marks to split an activity into pieces: lengths, delivery stops, speaking turns, or stages of a practical lesson. At the end, pause before copying the result so the digits do not continue advancing. Reset only after the numbers you need have been saved.
Common questions
What is the difference between a stopwatch and a timer?
A stopwatch counts up to show elapsed time; a timer counts down from a chosen duration. Use the stopwatch when the finish is not fixed in advance.
Can I record laps?
Use the lap control for intermediate marks while the overall measurement continues. Decide before starting whether pauses count, and save important results outside the page.
Will a clock change affect the result?
A continuous stopwatch normally measures elapsed time rather than the civil clock. For a long session, also record the start date, local time, and time zone.
Is this suitable for official sporting or scientific timing?
Use equipment and procedures required by the relevant rules. A browser, sleeping device, reload, or flat battery can interrupt the page, so it should not replace required calibrated timing.
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