What is Time Zone Converter?
The Time Zone Converter is an online tool that lets you convert any time from one time zone to another across all standard world time zones. It supports all IANA time zones, covering every country and major city, and automatically accounts for daylight saving time transitions so your conversions are accurate year-round. Beyond simple one-to-one conversion, the tool offers a multi-zone comparison view where you can add several time zones and see the equivalent time across all of them simultaneously. This makes it invaluable for scheduling international meetings, coordinating with remote teams, planning calls with family abroad, or simply figuring out what time a live event broadcast will air in your local time. The interface displays both the current time in any selected zone and allows you to set a custom date and time to convert, making it useful for planning future events as well as checking current times.
Why Use Time Zone Converter?
Global communication is now the norm, yet time zone math remains confusing and error-prone. With over 30 standard UTC offsets and many regions observing daylight saving time at different dates, manually calculating time differences is a reliable way to miss meetings and deadlines. Searching the web for conversions is slow and often gives results that do not account for DST transitions specific to the dates you care about. This tool solves those problems by using the IANA time zone database, which is the same authoritative source used by operating systems and programming languages worldwide. The multi-zone view is particularly powerful for distributed teams — instead of computing differences between pairs of time zones, you see all relevant zones at once and can slide the time to find an overlap that works for everyone. It eliminates the back-and-forth of proposing meeting times only to discover they fall outside business hours in another region.
How to Use
Start by selecting your source time zone from the dropdown, which lists zones by region and city for easy identification. Enter the date and time you want to convert, or leave it at the current time for an instant check. Then select the target time zone to see the converted time immediately. To compare multiple zones, click the add-zone button and select additional time zones — each one appears as a column showing the equivalent time. You can drag a slider or type a new time to see all zones update simultaneously, which is ideal for finding meeting windows. The tool indicates whether daylight saving time is in effect for each zone on the selected date, so you always know if an offset has shifted. If you work with UTC offsets rather than city names, you can also search by offset such as UTC+5:30 or UTC-8.
Example Usage
A product manager in San Francisco needs to schedule a sprint review with team members in London and Bangalore. They enter 10:00 AM PST and add the Europe/London and Asia/Kolkata zones. The tool shows that 10:00 AM PST is 6:00 PM GMT and 11:30 PM IST — too late for Bangalore. Sliding the time to 8:00 AM PST reveals 4:00 PM GMT and 9:30 PM IST, a better option. A sports fan in Tokyo wants to watch a Premier League match kicking off at 3:00 PM GMT on a Saturday. Converting to Asia/Tokyo shows midnight JST, helping them plan to stay up or record it. A freelancer billing a client in New York needs to log hours correctly — converting their work session from 9:00 AM AEST to Eastern Time confirms it was 6:00 PM EST the previous day. Each scenario demonstrates how the tool prevents costly time zone miscalculations.
Benefits
Automatic daylight saving time handling is the standout benefit — you never need to remember when clocks change in various countries because the tool uses up-to-date DST rules for every zone. The multi-zone comparison eliminates tedious pairwise calculations and makes it simple to find overlapping business hours for international teams. The interface clearly labels each zone with its UTC offset and DST status, so there is no ambiguity. The tool works on all devices and updates in real time as you adjust the input time, providing an interactive experience that is much faster than static conversion tables. It is free, requires no account, and stores no personal data, so you can share a link to a particular conversion with colleagues without privacy concerns.