🌍 Timezone Converter

What is a Timezone Converter?

A Timezone Converter displays the current local time for major cities worldwide on a single screen and instantly calculates what time it is in another country for any given moment. It's invaluable for scheduling international business meetings, planning calls with overseas colleagues, and checking global live event start times. Use the time slider to find the perfect meeting slot where all participants are within business hours — updated in real time as you drag. Daylight Saving Time (DST) for all supported cities is applied automatically using the browser's built-in Intl API.

Common Use Cases

How to Use

1. 1
   Confirm your base city

   Seoul (KST, UTC+9) is set as the default base city. Use the dropdown to switch to any other city as your reference timezone.
2. 2
   Add cities

   Click the 'Add city' card to reveal the city list, then select the cities you want to compare. Major cities including New York, London, and Tokyo are available.
3. 3
   Use the slider to find the best time

   Drag the slider left or right to shift all city clocks simultaneously. The ☀️/🌙 badge on each card shows whether it is daytime or nighttime, helping you identify the ideal meeting window.
4. 4
   Reset to live time

   After adjusting the slider, click the '↺ Current time' button to return to the real-time live clock view instantly.

Frequently Asked Questions