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Timezone Converter

Date & Time
045035
Converted time
2026-06-16T17:50

What Are Time Zones?

Time zones are regions of the Earth that observe the same standard time. The world is divided into 24 primary time zones, each offset from Coordinated Universal Time (UTC). UTC serves as the global reference point — for example, New York is UTC-5, Tokyo is UTC+9, and London follows UTC+0 (GMT). Time zones exist because the Earth rotates, causing different parts of the world to experience daylight at different times. Many regions also observe daylight saving time (DST), shifting clocks forward or backward seasonally.

How to Use

Enter a date and time, select the source timezone, and choose the target timezone. The converted time is displayed instantly. Click the 'Now' button to set the current time as your starting point.

Time Zones

This tool supports major time zones worldwide using IANA timezone identifiers. Daylight saving time adjustments are handled automatically by the browser's Intl API.

Common Use Cases

  • Scheduling meetings across remote teams in different countries
  • Planning international travel and coordinating arrival times
  • Converting event times for live streams, webinars, and broadcasts
  • Coordinating with overseas clients and business partners
  • Tracking market hours for international stock exchanges

Tips

Remember that UTC offsets can change throughout the year due to daylight saving time. Not all countries observe DST — Japan, China, and India maintain the same offset year-round. When scheduling recurring international meetings, choose a time that works for all participants and confirm whether any time zone changes are upcoming. The IANA timezone database is updated regularly to reflect political changes in timezone rules.

Privacy

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

FAQ

What is the difference between UTC and GMT?

GMT (Greenwich Mean Time) is a time zone, while UTC (Coordinated Universal Time) is the global reference standard based on atomic clocks. In practice they share almost the same value (UTC+0), but UTC is used as the precise standard.

Is the date and time I convert sent to a server?

No. Conversion is done entirely locally using the browser's Intl API, and the date and time you enter are never sent to or stored on any server.

Is daylight saving time (DST) handled automatically?

Yes. DST adjustments are applied automatically by the browser's Intl API based on each zone's rules. Regions that do not observe DST — such as Japan, China, and India — keep the same offset year-round.

Which time zones are supported?

It supports major time zones worldwide using IANA timezone identifiers (e.g., Asia/Tokyo, America/New_York). The IANA database is updated regularly to reflect political changes in timezone rules.

Does it convert past and future dates correctly?

Yes. Conversion follows the DST rules in effect for the chosen date, so past and future dates use the offset appropriate for that time. Where future rule changes are not yet defined, it falls back to current rules.