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Web Utilities

Time Zone Converter

Last updated: May 2026 4 min read

Convert time across world time zones with DST-aware offsets. Compare UTC, Europe, America, Asia, and Pacific zones in one view.

100% Local & Private. No data leaves your browser.
Source timezone

Target timezones

Source time: 26.05.2026 18:37 (UTC+0)

🇵🇱Warsaw (Europe)

Europe/Warsaw

20:3726.05.2026
UTC offset: UTC+2DST

🇬🇧London (Europe)

Europe/London

19:3726.05.2026
UTC offset: UTC+1DST

🇩🇪Berlin (Europe)

Europe/Berlin

20:3726.05.2026
UTC offset: UTC+2DST

🇫🇷Paris (Europe)

Europe/Paris

20:3726.05.2026
UTC offset: UTC+2DST

🇺🇸New York (America)

America/New_York

14:3726.05.2026
UTC offset: UTC-4DST

What is a time zone converter?

This tool converts a selected date and time from one source timezone into multiple target timezones. It uses native Intl APIs and automatically handles daylight saving time (DST).

You can search zones by city or IANA name (for example Europe/Warsaw), build your own comparison list, and instantly see day differences plus UTC offsets.

Everyday examples

Global meetings

Compare Warsaw, London, New York, and Tokyo at one selected source time.

DST transitions

Check schedules before and after daylight saving switches to avoid mistakes.

Launch planning

Coordinate one release moment across multiple customer regions.

How to use this time zone converter

Set one source time and instantly compare it across multiple target zones. It is useful for meetings, releases, and support shifts.

  1. Set the date, time, and source timezone.
  2. Add target zones from the searchable picker.
  3. Read local time, date, UTC offset, and day difference.

Glossary

IANA timezone

Standard zone name like Europe/Warsaw or America/New_York.

DST

Daylight saving time changes UTC offset during selected months.

Frequently Asked Questions

IANA zones, DST handling, and day differences in time conversion.

Does this tool handle DST automatically?

Yes. Conversion uses native Intl APIs and applies daylight saving rules for the selected date.

Where do timezone options come from?

The list is taken from Intl.supportedValuesOf("timeZone"), based on IANA zones available in your browser.

What does +1 day or -1 day mean?

It shows calendar day difference versus the source timezone for the same instant.

Is any data sent to a server?

No. Conversion and formatting run locally in your browser.

About these results

Outputs depend on timezone data available in your runtime and on the date you selected.