How to use the Time Zone Converter
Fill in the fields above and the result appears straight away. Everything runs in your browser, so nothing you type is uploaded.
How it works
Uses the browser Intl.DateTimeFormat time-zone database.
Examples
- 14:00 UTC on 8 November 2026 in Karachi
UTC: 2026-11-08T14:00:00.000Z Asia/Karachi: Sunday, 8 November 2026 at 19:00:00 GMT+5
- 09:00 UTC on 10 March 2026 in New York
UTC: 2026-03-10T09:00:00.000Z America/New_York: Tuesday, 10 March 2026 at 05:00:00 GMT-4
- 18:30 UTC on 15 June 2026 in London
UTC: 2026-06-15T18:30:00.000Z Europe/London: Monday, 15 June 2026 at 19:30:00 BST
Limitations and assumptions
Enter an ISO 8601 instant with Z or a UTC offset. The tool does not guess the source time zone.
Frequently asked questions
What is an IANA time zone name?
A region based name such as Europe/London or Asia/Tokyo. Names are used instead of abbreviations like EST because abbreviations are ambiguous and ignore daylight saving.
Why does the offset change during the year?
Many regions move their clocks for daylight saving. New York is UTC−5 in winter and UTC−4 in summer, so the same UTC time maps to different local times.
How do I convert between two local zones?
Convert the first local time to UTC, then convert that UTC time to the second zone. The meeting planner does both steps at once.
Is my time sent to a server?
No. The conversion runs in your browser.