Recentech StudioRecentech Studio

Free World Clock. Check current time across world time zones for free. Plan meetings, compare cities, and set countdowns — simple, accurate, always in sync.

World Clock & Timer

Check times across the world, convert time zones, and use a stopwatch & timer

World Clock
☀️New York

Fri, Oct 2

01:25:49 PM

🌙London

Fri, Oct 2

06:25:49 PM

🌙Paris

Fri, Oct 2

07:25:49 PM

🌙Dubai

Fri, Oct 2

09:25:49 PM

🌙Mumbai

Fri, Oct 2

10:55:49 PM

🌙Tokyo

Sat, Oct 3

02:25:49 AM

🌙Sydney

Sat, Oct 3

03:25:49 AM

☀️Los Angeles

Fri, Oct 2

10:25:49 AM

All processing happens in your browser. No data is sent to any server.

Key Features & Benefits

Live World Clock

Track real-time clocks across 24 major cities worldwide with automatic day/night indicators. Add or remove cities to customize your view, and see live-updating times with one-second precision.

Time Zone Converter

Convert any time between two time zones with date support. Pick from 24 major city time zones, enter a specific date and time, and instantly see the converted result — perfect for scheduling across regions.

Precision Stopwatch

A high-precision stopwatch using requestAnimationFrame for smooth centisecond accuracy. Record lap times to track intervals, and reset instantly. Works fully offline once the page is loaded.

Countdown Timer with Alerts

Set a countdown timer in hours, minutes, and seconds with a visual progress bar and audio beep notification when time is up. Pause and resume at any time without losing your place.

100% Private & Offline-Capable

All time calculations run entirely in your browser using the Intl.DateTimeFormat API. No data is sent to any server, and the stopwatch and timer work fully offline after the page loads.

Add & Remove Cities Freely

Customize your world clock by adding from 24 major global cities or removing ones you don't need. Your selected cities persist during the session for quick reference.

World Clock & Timer – Frequently Asked Questions

How accurate is the world clock?
The world clock uses your browser's built-in Intl.DateTimeFormat API, which provides time zone data from your operating system. This is the same accuracy used by your computer's clock — typically synchronized with atomic clocks via NTP, accurate to within a few milliseconds.
Can I add more cities to the world clock?
Yes! Click the 'Add' button to see all available cities. You can add any of the 24 supported major cities including New York, London, Tokyo, Dubai, Mumbai, and more. Remove cities you don't need by clicking the X button.
Does the stopwatch work offline?
Yes! The stopwatch uses requestAnimationFrame for high-precision timing and works completely offline once the page is loaded. No internet connection is needed to start, stop, or record laps.
Will I hear an alert when the timer finishes?
Yes, when the countdown reaches zero, a short audio beep plays using the Web Audio API. Make sure your device is not on silent mode to hear it. The timer also shows a visual 'Time's up!' indicator.
How does the time zone converter handle daylight saving time?
The converter uses your browser's IANA time zone database (e.g., America/New_York, Europe/London), which automatically accounts for daylight saving time transitions. When you convert a future date, it correctly applies the DST offset for that specific date.