Time Zone Converter

Convert a wall-clock time from one zone into many — DST-aware.

UTC / GMT

Base

UTC · UTC+00:00 · reference

12:55 AM

Sun, Jul 19

New York

DSTPrevious day

America/New_York · UTC-04:00 · 4h behind

08:55 PM

Sat, Jul 18

London

DST

Europe/London · UTC+01:00 · 1h ahead

01:55 AM

Sun, Jul 19

Tokyo

Business hours

Asia/Tokyo · UTC+09:00 · 9h ahead

09:55 AM

Sun, Jul 19

Day timeline in UTC / GMT

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Green = typical business hours (09–17). Accent mark = selected time.

Results

Shareable result

UTC / GMT: 12:55 AM

Export conversion

The base date and time are interpreted in the selected base zone, then converted with IANA daylight-saving rules. Day-change badges show when the converted calendar date differs.

How to use

Follow these steps to get a result

  1. Pick the base zone, date, and local wall-clock time.

  2. Add destination cities and switch the Base badge to compare from another city.

  3. Use Now for the current instant in the base zone, then copy or share the results.

Features

What this tool includes

  • IANA DST-aware conversion

  • Day-change and relative offset badges

  • Business-hours markers and day timeline

  • Shareable URL with zones, date, and time

  • Export as Copy, CSV, text, or PDF

FAQ

Common questions about this tool

A 9:00 start in Tokyo can still be the previous evening in New York. The converter marks previous/next day explicitly.

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