Stopwatch app icon
Tools

Stopwatch

A browser stopwatch that counts to a tenth of a second, records laps while it runs, and keeps the time if you close the page.

Open Stopwatch How to install

About Stopwatch

Find this application for Linux (.deb) at 👉 Linux Downloads

Stopwatch is a stopwatch that runs in the browser. It counts up to a tenth of a second, records laps while it is running and keeps its own time: it stores the moment you pressed start and works from there, so when you come back it shows the time that has really passed, including the time the page was closed.

What it does

  • Counts up to a tenth of a second. That is the finest step, and both the display and the laps use it.
  • Laps while it runs. The list fills as you press, the newest on top.
  • Each lap shows both numbers. The split for that lap and the total on the clock, one next to the other, so a lap reading 0:00:04.0 beside 0:00:12.4 means four seconds since the previous lap and twelve and a half since the start.
  • Reset keeps the list. The counter goes back to zero and the time you stopped at is added as a final lap. Clear Laps empties the list and starts numbering again at 1.
  • Keeps its own time. Close the page and come back: the count carries on from the moment you started, and the laps are still there.

What it does not do

  • It does not count milliseconds. A tenth of a second is the finest step.
  • It does not export the laps. They are there to read on screen, but there is no file to download or send.
  • It does not alert you when a time is reached. That is what a countdown timer is for.
  • It does not keep the screen on where the browser does not allow it.

Who it is for

  • Cooking and resting. How long the sauce has been on, how long the dough rests, how long the tea brews.
  • Training. Track laps, timed sets, the total time of a route.
  • Work. Time a single task, or measure how long a repeated operation takes.
  • Small things. How long the water takes to boil, how long parking takes. It is a way of finding out where the time goes.

Privacy and offline

There is no account and no call to a server. The laps and the running state are stored in your browser, on your device. The page works without a connection once it has been opened, and it can be installed on a phone like the rest of the Ufumbuzi PWAs.

Stopwatch features

Install Stopwatch as a PWA

Stopwatch is a progressive web app. Install it from your browser and it runs like a normal app, with its own icon and its own window.

Android

Open Stopwatch in Chrome, tap the browser menu (⋮) and choose “Install app” or “Add to Home screen”.

iPhone / iPad

Open Stopwatch in Safari, tap the Share button and choose “Add to Home Screen”.

Desktop

Open Stopwatch in Chrome, Edge or Brave and click the install icon on the right side of the address bar.

Frequently asked questions about Stopwatch

What is Stopwatch?

A browser stopwatch that counts to a tenth of a second, records laps while it runs, and keeps the time if you close the page.

Is Stopwatch free?

Yes. Stopwatch is a free, ad-free progressive web app. It needs no sign-up and no payment details, and your data stays on your own device.

Does Stopwatch work offline?

Yes. Once installed as a PWA, Stopwatch runs from your device and keeps working when you have no internet connection.

How do I install Stopwatch on my phone or computer?

Open Stopwatch in your browser and choose “Install app” from the Chrome menu, or “Add to Home Screen” in Safari. It then opens with its own icon, like a native app.

Which devices does Stopwatch support?

Stopwatch works on Android, iOS, Windows, macOS and Linux, because it is a progressive web app.

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