Time Zone Converter
Pick a date and time in one time zone and instantly see the equivalent local time in up to several destination zones at once — each showing the converted time, date (day before, same day, or next day), current UTC offset, and hour difference from the source. Every conversion uses real IANA time zone identifiers through the browser's Intl API, so daylight saving is handled correctly and automatically, never a manual fixed-offset guess.
About the time zone converter
Pick a date, time and source time zone, then convert it to one or more destination time zones at once — each shown with its local time, date shift (day before/same/next day), UTC offset, and hour difference from the source, using real IANA time zones so DST is always handled correctly.
Converting a meeting time across zones by hand is a common source of scheduling mistakes, mostly because daylight saving rules differ by country and shift on different dates. This converter avoids manual offset math entirely: pick a source date/time and zone, add one or more destination zones, and every result is computed through the browser's real IANA time zone database, so it is always correct for today's date.
When to use it
- Scheduling a meeting or call across multiple time zones.
- Working out what time a flight actually lands in local time.
- Checking whether a deadline in another time zone falls on the same day or the next.
How to use it
- Enter the source date, time and time zone.
- Add one or more destination time zones — search by city or country.
- Read each destination's converted time, date shift, UTC offset and hour difference.
Tips
- Use the quick-select shortcuts for common conversions like EST to IST.
- Search zones by city name if you don't know the exact IANA identifier.
FAQ
Does this handle daylight saving time correctly?
Yes — every conversion uses the real IANA time zone identifier through the browser's Intl API, so daylight saving transitions are applied automatically and correctly for the date you enter.
Can I convert to more than one destination at once?
Yes — add several destination time zones and see all of them converted from the same source time simultaneously.
Why use IANA zones instead of abbreviations like EST or IST?
Abbreviations like EST are ambiguous (several zones share similar names) and don't carry daylight-saving rules. IANA identifiers like America/New_York are unambiguous and always resolve to the correct current offset.