Time Zone Converter
Convert a date and time between any two time zones, and see the same moment around the world.
Runs entirely in your browser.
Time Zone Conversion Tool
World Clock (same moment)
About Time Zone Conversion
The world is divided into time zones, each defined as an offset from Coordinated Universal Time (UTC). Many regions additionally observe daylight saving time, which shifts the local offset during part of the year. Because of this, the difference between two cities is not fixed: London and New York are usually five hours apart, but for a couple of weeks each year the gap is only four hours. That is why correct conversion needs the IANA time zone database (names like Europe/Paris or America/New_York) rather than a simple fixed offset.
This converter runs entirely in your browser using the built-in Intl.DateTimeFormat API, which carries the full IANA time zone rules, including daylight saving transitions, so no data is uploaded and no library is needed. The date and time you enter are interpreted in the "From" zone, converted to an exact moment in time, and then displayed in the "To" zone along with each zone's current UTC offset and the difference between them. The world clock row shows that same moment in major cities around the globe.
Tip: your own time zone is preselected automatically. For Unix epoch conversions, try the companion Unix Timestamp Converter.
