World Time Zone Converter

Time zone basics

What is a time zone

A time zone is a region of the world that shares the same standard time. Time zones are usually written as an offset from Coordinated Universal Time, for example UTC+8 or UTC-5.

What is UTC and GMT

UTC stands for Coordinated Universal Time. It is the main reference time used worldwide. GMT stands for Greenwich Mean Time. For daily use you can treat UTC and GMT as the same base time, usually written as UTC+0 or GMT 0.

Why do you see UTC+8, UTC-5 and so on

The plus or minus number tells you how many hours that place is ahead of or behind UTC. For example, if UTC is 12:00 and a city is UTC+8, then the local time there is 20:00. If a city is UTC-5, the local time is 07:00.

What is Daylight Saving Time (DST)

Some countries move their clocks forward by one hour during part of the year to extend evening daylight. This is called Daylight Saving Time. When DST is active, the offset can change, for example London is usually UTC+0 but becomes UTC+1 during summer.

Does this converter handle DST

Yes. The converter uses your browser time zone engine and standard IANA time zone identifiers like Europe/London or America/New_York. When a region switches into or out of DST, the offset and converted time are adjusted automatically.

How to use this time zone converter

• Pick the date and time you want to convert, or click "Use current time".
• Select the source zone under From time zone, for example Asia / Kuala Lumpur (UTC+8).
• Select the destination zone under To time zone, for example Europe / London (UTC+0 or UTC+1 with DST).
• The result updates automatically whenever you change the time or either time zone.
• Use the Swap zones button to flip the conversion direction instantly.