Free online stopwatch with start, stop, lap, and reset. Millisecond precision, keyboard shortcuts, large display. Works on phone, tablet, and desktop.
A stopwatch measures elapsed time from a starting moment. Tooloogle's online stopwatch gives you a precise, distraction-free timer right in your browser — no app to install, no permissions, no ads in the middle of your timing.
It's accurate to the millisecond, supports unlimited lap times, has clear keyboard shortcuts, and a large display that's readable from across a room or kitchen counter.
Tap or click Start; the time begins counting up in HH:MM:SS.ms format. Tap Lap any time to record a split (the running clock keeps going). Tap Stop to pause; tap Reset to clear everything. The display stays accurate even when the tab is in the background, because timing uses the system clock — not a JavaScript counter that drifts.
Millisecond-precision display (HH:MM:SS.ms)
Unlimited lap times, with both lap duration and cumulative total shown
Keyboard shortcuts: Space = Start / Stop, L = Lap, R = Reset
Big-display mode — readable from several metres away (great for classroom or workshop use)
Drift-free timing — uses performance.now() internally, so it stays accurate even when the tab is hidden or your CPU is busy
Copy or download lap times as CSV
Works on phone, tablet, and desktop — large touch targets for fingers
Auto-saves running state to local storage — close the tab and it keeps counting; reopen and you're back where you were
Dark mode that follows your system preference
Click or tap Start (or press Space).
Tap Lap (or press L) every time you want to record a split.
Tap Stop (or press Space again) to pause.
Tap Reset (or press R) to clear the elapsed time and laps.
Copy laps to clipboard or download as CSV for further analysis.
Where a precise online stopwatch beats a phone timer or a wristwatch:
Sports & running coaches — tracking sprint times, interval workouts, and race-day splits with lap records.
Cooking & baking — timing rest periods, fermentation, or cookie batches with a big-display readable across the kitchen.
Studying with the Pomodoro technique — pair with a 25-minute focus block.
Public speaking practice — rehearsing presentations to fit a time limit, with laps for each slide.
Workplace meetings — running stand-ups, timeboxing discussions, or measuring how long an agenda item actually took.
Science labs & experiments — timing chemical reactions or physical observations to millisecond precision.
Music practice — tracking how long you practised each piece during a session.
Game speed-runs — recording precise attempt times with laps per checkpoint.
Many JavaScript stopwatches use setInterval, which drifts noticeably over long sessions. Ours uses performance.now() and the actual system clock, so a 30-minute run is accurate to within a couple of milliseconds even if your browser tab is in the background.
The default font is large enough to read from across a gym or kitchen. Toggle full-screen for a presentation-friendly view.
Everything runs in your browser. No timing data is sent anywhere, no analytics on your laps, no signup. The auto-save lives only in your device's local storage.
No signup, no premium tier, no ads interrupting your timing. Open the tab and start.
Yes — it uses the browser's high-resolution performance.now() clock, which is accurate to fractions of a millisecond on modern hardware. The display shows three decimal places.
It auto-saves the running state to local storage. If you close and re-open the tab, the elapsed time picks up from when you left — useful for very long timings (cooking, scientific experiments).
The stopwatch resumes correctly after sleep because it stores the actual start timestamp, not a tick counter. The display will jump forward when you wake the device.
There's no fixed limit — you can record thousands of laps in a single session. They're stored in browser memory and can be exported to CSV at any time.
Yes — once the page loads, it works without an internet connection. Great for gyms, kitchens, or any low-connectivity environment.
Yes. The buttons are sized for touch, the display scales to your screen, and the auto-save means accidental phone-call interruptions don't lose your timing.
This tool only counts up (the classic stopwatch behaviour). For a count-down with sound, use our countdown timer tool.
Functionally similar, with two advantages: (1) you can run it alongside your work in another browser tab without leaving your screen, and (2) you can copy / export lap times as CSV for further analysis — something most phone stopwatches don't offer.
How to Use Online Stopwatch — Free, Accurate, with Lap Times
Enter or paste the content you want to process using the online stopwatch — free, accurate, with lap times.
Adjust any available settings or options to customize the output.
View, copy, or download your processed results instantly.
Free online stopwatch with start, stop, lap, and reset. Millisecond precision, keyboard shortcuts, large display. Works on phone, tablet, and desktop.
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