---
title: "Time Zone Converter — Convert Time Between Any Two Cities"
description: "Convert time between any two IANA time zones with automatic DST handling. New York to London, Tokyo to LA, Dubai to Sydney — see UTC offsets and time differences instantly."
url: "https://worldcalculators.org/calculators/time-zone/"
canonical: "https://worldcalculators.org/calculators/time-zone/"
---

# Time Zone Converter

Convert time between any two IANA time zones with automatic DST handling. New York to London, Tokyo to LA, Dubai to Sydney — see UTC offsets and time differences instantly.

## Quick answer

New York to London is normally +5 hours (London ahead). New York to Tokyo is +13 or +14 hours. Select any pair below for the exact converted time.

## Key International Time Differences

The US transitions on the 2nd Sunday in March, while Europe transitions on the last Sunday in March. This creates a 1-2 week window where the transatlantic offset shifts. For example, NY-London is 5 hours in January but briefly 4 hours right after the US spring forward before Europe follows.

## Frequently Asked Questions

The International Date Line (IDL) runs roughly along the 180th meridian in the Pacific Ocean. Crossing it westward moves you one calendar day forward; crossing it eastward moves you one day back. This is why Auckland (UTC+12/13) and Honolulu (UTC-10) are on opposite sides of the same geographic longitude but a full day apart on the calendar.
No. Most of Africa, Asia, and some South American countries do not observe DST. China uses a single time zone (CST, UTC+8) for the entire country. India (IST, UTC+5:30) does not use DST. Japan (JST, UTC+9) abolished DST in 1951. The EU voted to abolish mandatory DST transitions but the change has not yet been implemented.

Source: https://worldcalculators.org/calculators/time-zone/
Markdown mirror of the HTML page. Prefer this URL for RAG; the interactive calculator still lives on the HTML page.