Timezone Converter

Convert times between cities and IANA timezones with DST awareness

TimezoneLocal timeOffset
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Pick a date, time and source timezone, then see the equivalent time across multiple cities and IANA timezones at once. DST is handled automatically using the browser's Intl API. Perfect for scheduling international meetings or coordinating with remote teammates.

How to convert timezones

1
Pick a source time

Choose date, time and source timezone.

2
Add cities to compare

Add IANA timezones for the cities you care about.

3
Read the table

Each row shows the local time, offset and DST abbreviation.

🌍
All IANA timezones

Use any of the 400+ standard tz database identifiers (e.g. Europe/Warsaw, America/Los_Angeles).

🗓
Add multiple cities

Compare a dozen cities side-by-side, with their offset and abbreviation.

☀
DST-aware

Daylight saving transitions are handled automatically by the browser's Intl engine.

🕐
Live clock

Optional live mode keeps clocks ticking and updates in real time.

FAQ

The IANA tz database defines unique identifiers like Europe/Warsaw or America/New_York that describe timezone rules over history, including DST.

Abbreviations like CST or EST are ambiguous (CST means both Central Standard Time and China Standard Time). IANA names are unambiguous.

Yes. The browser's Intl API uses up-to-date IANA rules and handles DST transitions automatically.

Many regions observe daylight saving time, shifting the offset by one hour for part of the year.

No. All conversions happen locally using the browser's Intl.DateTimeFormat API.

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