HeroTools / Productivity
Local · Private · Free

Countdown & Stopwatch

Count down to zero with a chime, or time anything with laps — accurate to the millisecond and entirely on your device.

00:25:00
:
:
00:00.00

Timing runs locally in your browser — nothing is uploaded.

Accurate timing, no install

Both tools time against the system clock rather than counting interval ticks, so they stay accurate even if the tab is throttled in the background. The countdown can chime and raise a desktop notification when it reaches zero (permission is only requested when you tick the box), and the stopwatch records lap and split times. Free forever, nothing leaves your device.

About Countdown & Stopwatch

Countdown & Stopwatch is a free, private productivity tool that runs entirely in your web browser. A big countdown timer and stopwatch with alerts — for events & focus. Because everything happens locally on your device, your files and data are never uploaded to a server, there is no sign-up or installation required, and it keeps working offline. It is handy for countdown, timer, stopwatch, clock. Like every HeroTool by Digital Heroes, Countdown & Stopwatch is 100% free with no limits.

How to use Countdown & Stopwatch

  1. Open Countdown & Stopwatch — it runs entirely in your browser, with no signup.
  2. Fill in the fields or choose the options you want.
  3. Adjust the options to match exactly what you need.
  4. Copy or download your result — it is free, and your data stays on your device.

Frequently asked questions

Is Countdown & Stopwatch free?

Yes — Countdown & Stopwatch is completely free for everyone. No sign-up, no account and no usage limits.

Is it private? Are my files uploaded anywhere?

No. Countdown & Stopwatch runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.

Does it work offline?

Yes. HeroTools is a Progressive Web App — once the page has loaded it keeps working offline, and you can install it as an app from your browser.

Do I need to install anything or create an account?

No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.

What does Countdown & Stopwatch do?

A big countdown timer and stopwatch with alerts — for events & focus.

Related Productivity tools

Browse all Productivity tools →

Project BoardA beautiful Asana-style board — labels, assignees, due dates, subtasks & drag-drop. Saves locally.▥Kanban BoardA private kanban that saves to your browser. Export/import JSON.NotesA fast local notebook with Markdown — stays on your device.Invoice GeneratorCreate branded invoices and export to PDF. Logo included.Pomodoro TimerFocus timer with task list and session stats.Business CalculatorsMargin, markup, break-even, ROI & CAC:LTV — instant business math.