Timezone Converter

About This Tool

The Timezone Converter displays a given UTC date and time across all 37 major world timezones simultaneously. Each timezone row updates instantly.

All timezone conversions use the browser's built-in Intl.DateTimeFormat API, which follows the IANA timezone database. Daylight Saving Time (DST) transitions are handled automatically.

How to Use

1. Enter a date and time in UTC using the datetime picker.
2. Click "Use Now" to pre-fill the current UTC time.
3. Scroll through the timezone list to find the local time for any city.

Use Cases

Remote teams schedule cross-timezone meetings by converting a proposed UTC time to each participant's local timezone. Developers convert API timestamps to human-readable local times. Travellers calculate local arrival times across time zones.

FAQ

• Does this handle Daylight Saving Time? — Yes. The browser's Intl API uses the IANA timezone database which includes all DST rules.
• Why enter UTC rather than a local time? — UTC is an unambiguous reference. Local times are ambiguous during DST transitions.
• Are all timezones shown? — 37 major world timezones are shown, covering key regions and cities in the IANA database.