How precise is the stopwatch?

The stopwatch is precise to centiseconds (1/100th of a second) and uses requestAnimationFrame for smooth updates.

Can I record lap times?

Yes. Click the Lap button while the stopwatch is running to record a split time. Fastest and slowest laps are highlighted.

Does it work in the background?

Yes. The current time is shown in the browser tab title so you can monitor it without switching back to the tab.

Is data stored anywhere?

No. Everything runs in your browser. Lap times are cleared when you reset or close the page.

Can I record multiple lap times?

Yes. Click the Lap button to record a split time without stopping the main timer.

Stopwatch — Online Stopwatch with Lap Times Free

Online stopwatch with lap times. Precise to milliseconds. Free online stopwatch — no download required.

00:00.00

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Instant

What is Stopwatch?

An online stopwatch measures elapsed time with millisecond precision. Our Stopwatch supports lap recording, allowing you to track split times for multiple intervals. It runs entirely in your browser with no installation required.

How to Use Stopwatch

1Click Start to begin timing.
2Click Lap to record a split time without stopping.
3Click Stop to pause the timer.
4Click Reset to clear all times.

Key Features

Millisecond precision
Lap time recording
Start, stop, lap, and reset controls
Runs in your browser

Benefits

Time athletic events and workouts
Measure task durations
Record split times for multiple intervals

Why Use Irreva for Stopwatch?

Time athletic events and workouts

Measure task durations

Record split times for multiple intervals

Runs 100% in your browser — files never leave your device.

No account, no sign-up, no subscription — free forever.

Works on any device: desktop, tablet, or mobile.

Frequently Asked Questions

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