Time Zone Converter

Convert a date and time between named time zones, including daylight-saving and next-day differences.

Time-zone rules use your browser’s IANA data. Repeated local hours expose an earlier/later choice.

How to use time zone converter

  1. Choose a source date-time and time zone
  2. Choose the destination zone and repeated-hour occurrence
  3. Read the converted local date and time

Worked example

January 15, 2026 09:00 New York to London

January 15, 2026 14:00 London

How the result is calculated

IANA time-zone rules come from your browser. The tool detects nonexistent local times during DST changes and exposes both occurrences when a clock time repeats.

Inputs stay in your browser. You can use this tool without joining the waitlist or creating an account.

From a calculation to a daily glance

Keep your next week in view.

Create your meeting at the converted time in iOS or Google Calendar, then view it through the app’s calendar widget. Conversion happens here, not inside the widget.

  1. 1Add the events you want to see to your calendar.
  2. 2Enable that calendar in the app.
  3. 3Add Weekly Calendar; use Edit Widget → Design to choose its look.
Get early accessExplore widget designs

Web results do not automatically sync to the app. Setup is manual; calendar events appear through your enabled calendars.

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CelebrationWorkshopMeetingProject reviewTeam dinner
Weekly Calendar · example design from the app

Frequently asked questions

How does this time zone converter work?
IANA time-zone rules come from your browser. The tool detects nonexistent local times during DST changes and exposes both occurrences when a clock time repeats.
How can I use the result with Monthly Calendar Widgets?
Create your meeting at the converted time in iOS or Google Calendar, then view it through the app’s calendar widget. Conversion happens here, not inside the widget.
Do I need an account to use this tool?
No. The tool works in your browser without an account. Your inputs are not sent to our servers. Downloaded files stay on your device.

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