Online Stopwatch — Timer Online
Free online stopwatch with lap times and millisecond accuracy.
How to Use Online Stopwatch
The Online Stopwatch is ready the moment the page loads — there is nothing to set up. Click start and the display begins counting in minutes, seconds, and hundredths of a second, updating smoothly on every animation frame so the timing stays accurate rather than drifting the way a naive one-second interval does. Click stop to pause, and start again to resume from exactly where you left off; the elapsed time is preserved, so pausing costs you nothing. While the stopwatch timer is running, the lap button records a split without interrupting the count, and each lap is added to a scrolling list beneath the controls with the most recent at the top, so you can compare intervals at a glance. Reset clears the display and the whole lap list to start fresh. Timing is measured against the browser's high-resolution clock, which is unaffected by system clock changes, and everything runs on your device — no data is recorded, sent, or stored anywhere.
Why Use Our Online Stopwatch?
Sometimes you just need to time something and your phone is across the room, already in use as a metronome, or locked. Having a timer online in a browser tab means it is one click away on whatever machine you are already working on, with a display large enough to read from across a desk. Hundredth-of-a-second precision makes it usable for interval training, lab work, and race splits, not just rough kitchen timing, and the lap list turns it into a proper split timer rather than a single number. Because it is a web page, it works identically on Windows, macOS, Linux, Android, and iOS with nothing to install and no permissions to grant. There are no ads covering the controls, no signup, and no limit on how long it runs. The high-resolution timing source is the detail that matters most: it means a stopwatch left running for an hour is still accurate at the end, which is not true of simpler implementations.
Frequently Asked Questions
Is the Online Stopwatch free to use?
Yes. The Online Stopwatch is completely free with no usage limits, no signup, and no hidden fees.
Do I need to create an account?
No account or signup is required. Just open the tool and start using it immediately.
Is my data safe when using this tool?
Yes. All processing happens directly in your browser, so your data is never uploaded to a server or stored anywhere.
Does the Online Stopwatch work on mobile devices?
Yes, the tool is fully responsive and works on any modern browser, including mobile phones and tablets.
How does stopwatch timer work?
The Online Stopwatch is ready the moment the page loads — there is nothing to set up. Click start and the display begins counting in minutes, seconds, and hundredths of a second, updating smoothly on every animation frame so the timing stays accurate rather than drifting the way a naive one-second interval does. Everything runs directly in your browser, so stopwatch timer takes only a few seconds.
What about timer online?
Sometimes you just need to time something and your phone is across the room, already in use as a metronome, or locked. That covers timer online too — the same tool handles it with no extra steps, settings, or downloads.
Related Tools
Age Calculator
Calculate your exact age in years, months and days from your date of birth.
Percentage Calculator
Find percentages, increases, decreases, and ratios between two numbers instantly.
BMI Calculator
Calculate your Body Mass Index and see your healthy weight range instantly.