A stopwatch is one of the simplest tools imaginable, but a genuinely accurate, distraction-free one that just opens in a browser tab without ads blocking the timer or an app to install is surprisingly hard to find. This one starts, stops, and records lap times with centisecond precision.
Use it for workouts, cooking, timing presentations, or any task where you need a running clock without reaching for a phone app.
Lap times are recorded in order below the main display, so you can review a full session's splits after you're done.
Because everything runs locally in your browser, results appear instantly and nothing you type or upload is ever sent to a server.
Bookmark this page if you expect to use this tool regularly — it loads fast and behaves the same way every time, with no account needed.
This kind of task shows up constantly in everyday writing, coding, design, and admin work, which is exactly why a dedicated, focused tool saves so much back-and-forth.
A tool that does one job well, without a cluttered interface or unrelated features competing for attention, tends to be faster to use than a heavier all-in-one app.
If you find yourself needing this conversion or calculation often, keeping this page open in a tab is usually faster than digging through a bigger software suite's menus.
Because there's no sign-up or installation step, you can jump straight from search result to working tool in a couple of seconds.
This page works the same way on a phone, tablet, or desktop browser, so switching devices doesn't mean relearning a different interface.
The interface is intentionally simple, so there's no learning curve — the input goes in, the result comes out, and that's the whole interaction.
Because the calculation or conversion happens instantly as you type, you can experiment freely and see how changing one value affects the result.
Frequently asked questions
How accurate is this stopwatch?
It updates at roughly 10-millisecond precision using your browser's timing functions, accurate enough for virtually any everyday timing task.
Does the stopwatch keep running if I close the tab?
No, closing or reloading the tab resets the timer since it runs entirely in that page's memory.