Time Zone Converter
Enter a date and time in one time zone and convert it to another. Daylight saving time is handled automatically using your browser's time zone database.
Convert
Converted time:
UTC offset difference:
How daylight saving time is handled
Rather than using fixed UTC offsets, this calculator relies on your browser's built-in IANA time zone database (the same system used by operating systems worldwide) to look up the correct offset for the specific date you enter — automatically accounting for daylight saving time transitions, which happen on different dates in different regions and don't apply at all in some places.
Frequently asked questions
Why does the same time zone show a different offset in summer vs. winter? Many regions observe daylight saving time, shifting their clocks forward by an hour for part of the year — the calculator looks up the correct offset for your specific chosen date rather than assuming a fixed year-round offset.
Why do some countries not observe daylight saving time? It's a matter of national or regional policy — many countries near the equator skip it entirely since day length varies little through the year there, while others have phased it out for various economic or logistical reasons.
Is this accurate for scheduling international meetings? Yes, for present and near-future dates — it uses the same time zone data your operating system uses, which is kept updated for known daylight saving rules and changes.