Time Zone Calculator

A time and two UTC offsets — the converted time, with a day-shift indicator.

:
hrs
hrs

UTC offsets ignore daylight saving time — confirm the current offset for your specific dates if DST applies.

Converted time
04:30
1 day(s) later

A large offset difference can push the converted time into the next or previous day — the day indicator above tracks that shift.

A worked example

14:30 at UTC−5 converts to 04:30 at UTC+9 — landing on the next calendar day.

Frequently asked questions

Why does this ask for UTC offset instead of a city or time zone name?

Time zone names (like 'Eastern Time') can mean different offsets depending on daylight saving time, while a direct UTC offset is unambiguous — entering the specific offset for your dates avoids that ambiguity.

What does the 'day offset' tell me?

Whether the converted time lands on the same calendar day, the next day, or the previous day relative to the original — crossing many time zones can easily push a time past midnight in one direction or the other.