Time Tools

Time Zone Converter

Convert times between time zones instantly. World clock with multiple cities, meeting planner, and DST-aware conversions.

Your data never leaves your browser — nothing is sent to any server.

Converted Times

New YorkGMT-4🌆

Sun, May 31, 21:00:00

LondonGMT+1🌙

Mon, Jun 1, 02:00:00

TokyoGMT+9

Mon, Jun 1, 10:00:00

World Clock (Live)

New York

15:55:45

London

20:55:45

Tokyo

04:55:45

How to use
  1. 1

    Select your source timezone

    Choose the timezone you're converting from using the dropdown menu.

  2. 2

    Enter time and date

    Set the specific time and date you want to convert. Defaults to the current time.

  3. 3

    Add destination cities

    Click 'Add city' and search for the cities you want to see the converted time in.

  4. 4

    Read results and copy

    View the converted times for all cities. Use 'Copy all' to share the schedule with your team.

FAQ (6)
How do I convert time between time zones?

Select a source timezone, enter the time and date you want to convert, then add destination cities. The tool instantly shows what time it will be in each city, accounting for daylight saving time differences.

Does this handle daylight saving time (DST)?

Yes. The converter uses the Intl.DateTimeFormat API which is aware of DST transitions for all IANA time zones. When you select a date that falls within a DST period, the offsets adjust automatically. This is why results may differ by an hour depending on the date you choose.

Can I use this as a world clock?

Yes. The World Clock section at the bottom shows the current live time in all your selected cities. It updates every second, making it perfect for keeping track of team members or offices in different parts of the world.

What time zones are supported?

The tool supports 30 popular time zones covering major cities across all continents. These use IANA timezone identifiers (e.g., America/New_York, Asia/Tokyo) which are the standard used by operating systems and programming languages worldwide.

How do I plan a meeting across multiple time zones?

Set your timezone as the source, enter your preferred meeting time, then add all participant cities. The tool shows the local time for each city with visual indicators (moon/sunset icons) for inconvenient hours, helping you find a time that works for everyone.

What do the moon and sunset icons mean?

The moon icon (🌙) appears when the converted time falls between 10 PM and 6 AM, indicating nighttime. The sunset icon (🌆) appears between 6 PM and 10 PM, indicating evening. These help you avoid scheduling meetings at inappropriate hours.

Learn more

Time Zone Converter: Convert Meeting Times Across the World

Working with distributed teams means constantly converting between time zones. The Time Zone Converter eliminates mental arithmetic by showing you exact times in multiple cities simultaneously. Whether you're scheduling a standup with Tokyo, a client call with London, or a demo with São Paulo, this tool ensures everyone shows up at the right time.

Understanding Time Zones

The world is divided into 24 primary time zones, each offset from Coordinated Universal Time (UTC). However, real-world time zones don't follow neat meridian lines — they follow political boundaries, which is why India is UTC+5:30 and Nepal is UTC+5:45. The IANA Time Zone Database (tzdata) maintains these definitions and is what this tool uses internally.

Daylight Saving Time Complexity

DST makes timezone conversion non-trivial. Not all countries observe DST, those that do switch on different dates, and the Southern Hemisphere switches in the opposite direction from the Northern Hemisphere. A naive UTC offset calculation will be wrong during transition periods. This converter handles all of this automatically by using the browser's built-in timezone database.

Meeting Planning Best Practices

When scheduling across zones, aim for the overlap window where all participants are in reasonable working hours (typically 9 AM–6 PM local time). For US-Europe meetings, mornings US time / afternoons EU time work best. For US-Asia meetings, early US mornings or late Asia evenings are common compromises. The visual indicators in this tool help you spot problematic times instantly.

World Clock for Remote Teams

The live world clock feature shows current times across your selected cities updating in real time. Keep it open during work hours to always know whether your colleagues are online, on lunch, or finished for the day. Many remote teams display a world clock in their Slack or dashboard to improve async communication timing.

Common Time Zone Abbreviations

EST/EDT (Eastern), CST/CDT (Central), MST/MDT (Mountain), PST/PDT (Pacific) cover the US. GMT/BST cover the UK. CET/CEST cover Central Europe. JST is Japan, IST is India, AEST/AEDT is Eastern Australia. The "S" or "D" variants indicate summer/daylight time. This tool shows the actual UTC offset to avoid abbreviation ambiguity.