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Timezone Converter — Convert World Time Zones Free

Convert time between any two world timezones instantly. Pick a date and time, select your source and target zones, and get the exact converted time with full date formatting. Uses the browser's built-in Intl API — 100% private, no data leaves your device.

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About the Timezone Converter

Timezone conversion is essential for anyone working across borders, scheduling international meetings, or traveling abroad. Different regions of the world observe different standard times, and many also change clocks seasonally for daylight saving time (DST). This can make coordinating across timezones confusing without the right tool.

Our Timezone Converter lets you instantly convert any date and time from one timezone to another. Simply pick the date and time, choose your source timezone (where the original time is), and the target timezone (where you want to know the equivalent time). The converter handles everything automatically, including DST adjustments and UTC offset calculations.

The tool uses the browser's built-in Intl.DateTimeFormat API, which means all calculations happen locally on your device. No data is sent to any server, making this converter completely private and secure. It supports every timezone in the IANA Time Zone Database, including all major cities and regions worldwide.

Common use cases include: scheduling meetings with international colleagues, planning travel across timezones, converting event times for global audiences, coordinating with remote teams, and understanding time differences for stock markets, sports events, and live broadcasts.

Frequently Asked Questions

To convert time between timezones, select the date and time you want to convert, choose the source timezone (where the time is currently), and the target timezone (where you want to know the time). Our converter uses the browser's built-in Intl.DateTimeFormat API to calculate the exact difference, accounting for daylight saving time automatically.
Yes, our timezone converter automatically accounts for daylight saving time (DST). The Intl.DateTimeFormat API used by our tool handles all DST transitions for every timezone, so the converted time is always accurate regardless of whether DST is in effect in either the source or target timezone.
UTC offsets vary by timezone and season. For example, New York is UTC-5 (EST) or UTC-4 (EDT), London is UTC+0 (GMT) or UTC+1 (BST), Tokyo is UTC+9 (JST), and India is UTC+5:30 (IST). Our converter shows the current UTC offset for both the source and target timezones so you can see the exact hour difference.
There are 38 standard timezone offsets in use worldwide, ranging from UTC-12 to UTC+14. However, there are over 400 named timezones in the IANA Time Zone Database used by most operating systems and our converter. This includes historical changes and regional variations like America/New_York, Europe/London, Asia/Tokyo, and Australia/Sydney.

Last updated: June 2026