Online Timer & Stopwatch

A countdown timer with an alarm and a precise stopwatch with laps, right in your browser.

This tool runs entirely in your browser — no data is uploaded to our servers.

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Need a timer for cooking, studying, workouts or meetings? Set hours, minutes and seconds or pick a preset; an alarm sounds when time is up and the remaining time shows in the tab title.

In stopwatch mode, measure time to the hundredth of a second and record laps for each round or stage.

How to use it

  1. Choose countdown timer or stopwatch.
  2. Timer: set the duration or pick a preset, then press Start.
  3. Stopwatch: press Start and use Lap to record split times.

Features

  • Alarm sound when the timer ends, no downloads needed.
  • Remaining time shown in the tab title.
  • Presets from 1 minute to 1 hour (including 25 min for Pomodoro).
  • Stopwatch to 1/100 s with laps.
  • Keeps running when you switch tabs.

Tip: To study with focus, try the Pomodoro technique: 25 minutes of work, 5 minutes of rest, and a longer break after four rounds.

Privacy

The tool runs in your browser and your data is not sent to our servers. Free, with no sign-up.

Frequently asked questions

Does it run if I close the tab?

No, keep the tab open (you can switch to other tabs). Closing the page stops it.

Why didn’t I hear the alarm?

Check your device and browser volume, and interact with the page at least once, as browsers require it to play sound.

How accurate is the stopwatch?

It uses your device clock and is accurate enough for everyday and informal sports use.

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