Chronomètre en Ligne avec Tours — Gratuit & Précis

Chronomètre à la milliseconde avec enregistrement des tours et temps intermédiaires. Continue de fonctionner en arrière-plan.

How to use the VClock online stopwatch

Step 1 Open the Stopwatch tab Tap Stopwatch in the navigation bar or press 3 on your keyboard.
Step 2 Start and record laps Press Start to begin. Press Lap at the end of each interval to record a split. The lap list shows both split time and cumulative elapsed time.
Step 3 Switch views freely The stopwatch keeps running in the background while you navigate to other tools. The status overlay in the bottom-right shows elapsed time at all times.
Step 4 Review your splits Stop the stopwatch to freeze the display. All lap times remain visible for review. Reset clears everything for the next session.

Stopwatch precision — why it matters

VClock's stopwatch uses performance.now(), the browser's high-resolution time API. Unlike Date.now() or setInterval-based timers, performance.now() is monotonic and not affected by system clock adjustments. The result is sub-millisecond precision that remains accurate even after long sessions.

Using a stopwatch for running and interval training

For runners and athletes, the lap feature turns a simple stopwatch into a split-time logger. Record each 400 m interval, each kilometre, or each drill set. After your session, the full lap history gives you a clear picture of your pace consistency. No app installation needed — open VClock on your phone's browser and you have a full-featured sports stopwatch in seconds.

Six tools, one tab

🕐 Digital Clock

Live 12 h or 24 h clock in a retro LCD font. Shows the full date, sunrise & sunset times for your location, and visual progress bars for the current day, week, month, and year.

⏰ Alarm

Set unlimited alarms with custom labels and optional repeat days (Mon–Sun). A cuckoo chime is synthesised directly in the browser via the Web Audio API — no audio files, no downloads required.

⏱ Stopwatch

Millisecond-precision stopwatch with lap recording and split times. Keeps running in the background while you switch to other views — your timing is never interrupted.

⏳ Countdown Timer

Visual SVG ring countdown with quick-set presets (1 min, 5 min, 10 min…) and a built-in Pomodoro mode (25 min focus / 5 min break). An audio chord plays when time is up.

🌎 World Clock

Live times for 80+ cities across Europe, the Americas, Asia, Africa, and Oceania. Cities are grouped by continent and searchable by name or country. UTC offset shown for every timezone.

📅 Public Holidays

Look up public and bank holidays for any supported country and year. Plan your schedule around local and international holidays at a glance.

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Frequently Asked Questions

Is VClock free to use?

Yes — completely free. No account, no subscription, no hidden fees. VClock is funded by advertising; you can choose to accept or decline ad cookies via the cookie banner that appears on your first visit.

Does VClock collect or store my personal data?

VClock stores only your preferences (theme, language, zoom, digit colour) and any alarms you set in your browser's own localStorage. Nothing is ever transmitted to a server. If you accept advertising cookies, Google AdSense may collect usage data as described in our Privacy Policy — you can decline at any time.

Can I use VClock without an internet connection?

Yes. VClock has zero external runtime dependencies and self-hosts its fonts. Once the page has loaded, all features — clock, alarm, stopwatch, timer — continue to work fully offline.

Which languages does VClock support?

VClock supports six languages: English, German (Deutsch), French (Français), Spanish (Español), Italian (Italiano), and Dutch (Nederlands). Use the language button in the toolbar to switch instantly — no page reload needed.

Will the alarm fire if I switch to another browser tab?

The alarm service runs continuously as long as the VClock tab is open, even while you navigate between its own views. However, browsers may throttle background tabs on mobile devices or in power-saving mode, so we recommend keeping VClock in the foreground for time-critical alarms.

How do I change the clock colour or theme?

Use the toolbar at the top of the page. The sun/moon icon toggles between light and dark themes. The palette icon opens an 8-colour swatch picker that changes the LCD digit colour — your choice is saved automatically in your browser.

What is Pomodoro mode in the Timer?

The Pomodoro Technique is a time-management method: work in focused 25-minute sessions separated by 5-minute breaks, with a longer 15-minute break after every four sessions. VClock's Timer includes a one-tap Pomodoro preset that handles the session/break cycle automatically.

How accurate is the stopwatch?

VClock's stopwatch uses performance.now() for millisecond precision, which is significantly more accurate than Date.now() or setInterval-based timers. Lap times and split times are recorded to the millisecond.

About VClock

VClock is a free, browser-based time utility built with vanilla TypeScript and Vite — no UI framework, no runtime dependencies. All fonts are self-hosted. Your preferences and alarms are stored locally in your browser and never leave your device.

VClock is available in English, German, French, Spanish, Italian, and Dutch. It is designed to be fast, accessible, and GDPR-compliant. The source uses the DSEG7 Classic LCD font by Keshikan, licensed under the SIL Open Font Licence 1.1.

VClock is supported by Google AdSense advertising. Ad personalisation cookies are only applied after you give explicit consent. You can withdraw consent at any time by clearing your browser's site data for this domain.