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Time Zone Converter

Convert a time between any two time zones. Uses your browser's Intl API —no server needed.

Converter Tools Runs locally No data sent
time zonesUTCworld clockbrowser only
Convert time
→
—
World clock (current time)

What is a Time Zone Converter?

A time zone converter translates a specific date and time from one time zone to another. Time zones are defined by their offset from Coordinated Universal Time (UTC) and may shift by one hour during daylight saving time. This tool uses the browser's built-in IANA time zone database to ensure accuracy for all regions and seasons.

How to Use Time Zone Converter

  1. Click "Use current time" to prefill with the current date and time, or type a custom date and time.
  2. Select the source time zone in the "From" dropdown.
  3. Select the target time zone in the "To" dropdown.
  4. The converted time appears instantly in the result card.
  5. Click any city in the world clock to use it as the target time zone.

Quick Guides

Date & Time Format Reference explains ISO 8601, UTC, and offset notation so you can interpret time values correctly before converting.

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Understanding Time Zones and UTC ▾
Example
Input 9:00 AM New York (EST)
Output 2:00 PM London (GMT)
Common Use Cases
  • Scheduling meetings across different countries
  • Checking what time it is in a client's city
  • Converting event times for international audiences
  • Planning travel across time zones
Frequently Asked Questions
How does this tool know all time zones?

It uses the browser's built-in Intl API (IANA time zone database), which includes all standard time zones worldwide including daylight saving time rules.

Does it handle daylight saving time?

Yes. The Intl API automatically applies DST rules for each time zone based on the selected date and time.

Can I convert to UTC?

Yes. Select UTC in the "To time zone" dropdown. UTC has no offset and never observes daylight saving time.

What does the world clock show?

The world clock shows the current local time in 14 major cities. Click any city card to set it as the target time zone.