Time Zone Converter
Convert a time between world cities — see what 3 PM in New York is in London, Tokyo, or any other zone, with daylight saving handled automatically for the date you pick.
Source time
Convert to
Conversions use your browser's built-in IANA time zone database (via the Intl API), so results depend on how up to date your browser or operating system is. Nothing is sent to a server.
Frequently Asked Questions
- How do I convert a time between time zones?
- Pick the date and time, choose the zone that time is in, and add up to four target zones. Each target card shows the equivalent local time, the date, whether it falls on the previous or next day, and the zone's current UTC offset.
- Does the converter handle daylight saving time?
- Yes, automatically. Conversions use your browser's built-in IANA time zone database (via the Intl API), which knows every zone's daylight-saving rules, so summer and winter offsets are applied correctly for the specific date you choose.
- Why can a converted time land on a different day?
- Zones can be up to 26 hours apart, so an afternoon meeting in one city can be early the next morning in another. Each result card shows a +1 day or −1 day marker whenever the converted time crosses midnight relative to the source date.
- Where does the time zone data come from?
- From your own browser. The tool asks the browser's Intl.DateTimeFormat API to render the chosen instant in each zone, so results reflect the IANA time zone database version shipped with your browser or operating system. Nothing is sent to a server.
- What is the difference between ET and EST?
- ET (Eastern Time) is the umbrella name for the zone; EST (UTC−5) is its winter/standard offset and EDT (UTC−4) its daylight-saving offset. The converter works with the IANA zone (America/New_York), so the correct one of the two is chosen for your date.