Timezone Converter
Free online timezone converter. Convert time between any zones, check world clock, calculate time differences instantly.
What is a timezone converter?
A timezone converter is a tool that allows you to convert a specific time from one timezone to another, helping you understand what time it is in different parts of the world simultaneously.
How do I convert time between timezones?
Enter the date and time, select the source timezone, then choose the target timezone. The converted time will be displayed instantly.
What is the difference between UTC and GMT?
UTC (Coordinated Universal Time) is a time standard based on atomic clocks, while GMT (Greenwich Mean Time) is a time zone. In practice, they show the same time, but UTC is more precise and used as the global reference.
Does this tool handle daylight saving time?
Yes, the conversion automatically accounts for daylight saving time (DST) based on the IANA timezone database built into your browser.
How many time zones are there in the world?
There are 24 standard time zones, but due to half-hour and quarter-hour offsets (like India's UTC+5:30 or Nepal's UTC+5:45), there are over 38 different UTC offsets in use.
What is the IANA timezone database?
The IANA Time Zone Database (also called the Olson database) is the worldwide reference for timezone definitions. It contains all historical timezone changes and DST rules, and is updated regularly.
What is the International Date Line?
The International Date Line is an imaginary line at approximately 180° longitude that marks where each calendar day begins. Crossing it eastward subtracts a day; crossing westward adds a day.
Why do some countries have half-hour timezones?
Some regions chose offsets that are 30 or 45 minutes from UTC to better reflect their solar time or for political reasons. Examples include India (UTC+5:30), Iran (UTC+3:30), and Nepal (UTC+5:45).
How can I plan meetings across multiple timezones?
Use this converter to find overlapping working hours. Enter your local meeting time and check what time it corresponds to in each participant's timezone to find a convenient slot for everyone.
Is my data sent to a server?
No, all calculations are performed entirely in your browser. No data is transmitted to any server, ensuring complete privacy.
What is Unix timestamp?
Unix timestamp is the number of seconds elapsed since January 1, 1970 (UTC). It is a universal way to represent time in computing, independent of timezone.
What is jet lag and how does it relate to timezones?
Jet lag is temporary sleep disruption caused by rapid travel across multiple timezones. As a general rule, crossing more than 3 time zones can cause jet lag, with recovery taking roughly one day per timezone crossed.
How to Use Timezone Converter
Convert times between any time zones, check the world clock and see the exact time difference. Everything is calculated locally in your browser, and your data never leaves your device.
- Click the search box with the Search timezone... placeholder and type a city or zone, such as Tokyo or UTC.
- Choose the source zone and the target zone from the matching suggestions.
- Set the date and time you want to convert, or leave it at the current time.
- Read the converted time for the target zone together with the time difference between the two zones.
Searching by major city name, like Paris for Europe/Paris, is usually faster than scrolling through the full zone list.
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