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Stopwatch & Timer

Measure time with precision. Use the stopwatch for elapsed time or set a countdown timer.

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Free Online Stopwatch and Timer

A precision stopwatch with lap/split times and a full countdown timer in one page. Time workouts, cooking, exams, presentations and games.

Both tools run entirely in your browser with millisecond display. Set timer presets, record unlimited laps, and reset with one click.

Precision stopwatch

Start, stop and reset with millisecond accuracy. Record unlimited lap times and review every split in the list.

Countdown timer

Set hours, minutes and seconds or use a quick preset. The timer alerts you when time runs out.

Two tools, one tab

Switch between stopwatch and timer tabs instantly. Your lap list and timer setting stay put while you switch.

How to use

  1. Choose the Stopwatch or Timer tab.
  2. For the stopwatch: Start, then Lap to mark splits.
  3. For the timer: set a duration or pick a preset, then Start.
  4. Reset anytime to start over.

Frequently Asked Questions

How accurate is the online stopwatch?

It displays hundredths of a second using the browser's high-resolution clock — plenty for workouts, cooking and casual timing.

Does the timer work if I switch tabs?

Yes. The timer keeps running in the background and alerts you when it finishes, even in another tab.

Can I record lap times?

Yes. Hit Lap while the stopwatch runs to capture unlimited splits, each listed with its time and total.

Is it free?

Completely free, no account and no install. It works on desktop and mobile browsers.

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Frequently Asked Questions

Yes. This stopwatch and timer is 100% free with no hidden charges, premium tiers, or usage limits. Use it as often as you need.
No account is required. You can start timing instantly without signing up, logging in, or providing any personal information.
The stopwatch uses the browser's high-resolution timestamp API (performance.now) for millisecond precision. Display updates every 10ms for smooth real-time feedback.
Yes. The stopwatch and timer is fully responsive and works on smartphones, tablets, and desktop browsers. Touch-friendly button sizes make it easy to use on any screen.
You can set up to 99 hours, 59 minutes, and 59 seconds. The display supports hours, minutes, and seconds with a large, easy-to-read format.
Click the Lap button while the stopwatch is running to record a lap. Each lap shows the split time and elapsed time. The lap list appears below the display.
Yes. All timing runs entirely in your browser. No data is sent to any server, and nothing is stored or tracked.

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