Stopwatch

A precise online stopwatch with lap recording. Start, stop, and reset with a single click. Record unlimited laps and export your times for sports and study tracking.

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How to Use Stopwatch

1

Start the stopwatch

Click the Start button to begin timing. The display updates in real time showing hours, minutes, seconds, and milliseconds.
2

Record laps

Click the Lap button while the stopwatch is running to record a split time. Each lap is logged in the list below.
3

Stop and reset

Click Stop to pause and Resume to continue, or click Reset to clear all times and start fresh.

Frequently Asked Questions

How accurate is the online stopwatch?

The stopwatch uses the browser's high-resolution performance timer (performance.now()) which is accurate to within a millisecond for most devices.

Can I record unlimited laps?

Yes. There is no limit on the number of lap times you can record. All laps are listed with their individual split time and cumulative elapsed time.

Will the stopwatch pause if I change tabs?

No. The elapsed time continues to accrue accurately in the background. Switching tabs does not pause or affect the running timer.

About Stopwatch

The Stopwatch on Utilko delivers precision timing with millisecond accuracy and unlimited lap recording — all in your browser with no download required. Whether you are timing athletic performance, a cooking process, a presentation rehearsal, or a productivity sprint, the simple Start/Lap/Stop/Reset interface keeps the focus on your task rather than the tool.

Each recorded lap shows both the individual split time and the total elapsed time, making it easy to compare intervals and track improvement over multiple rounds. The stopwatch continues running accurately in the background while you use other tabs, so you never lose track of your time.

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