Time Zone Converter
Convert time between any time zones instantly. Compare times across cities worldwide, see time differences at a glance, and find the best meeting time across time zones. Free online time zone converter.
Convert Time
Time Difference Between Two Zones
World Clock
Current time in major cities (updates live):
Frequently Asked Questions
How does the time zone converter work?
Enter a date and time, select the source time zone, choose a target time zone, and click Convert. The tool uses your browser's built-in Intl.DateTimeFormat API with the IANA time zone database (the same one used by most operating systems) to perform the conversion accurately, including daylight saving time adjustments.
What are IANA time zone identifiers?
IANA (Internet Assigned Numbers Authority) maintains a database of time zones identified by names like "America/New_York", "Europe/London", or "Asia/Tokyo". These identifiers are more precise than abbreviations like "EST" or "PST" because they encode the geographic region and automatically handle daylight saving time rules.
Does this tool handle daylight saving time (DST)?
Yes. The IANA time zone database includes historical and current DST rules for every region. When you convert a time during a DST transition period, the tool automatically applies the correct offset. For example, converting 2:00 PM in New York will use UTC-4 during summer (EDT) and UTC-5 during winter (EST).
Why is UTC used as a reference?
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks and time. It doesn't observe daylight saving time, making it the perfect anchor point for time zone conversions. All time zone offsets are expressed as UTCยฑHH:MM.
How do I find the best meeting time across time zones?
Use the World Clock section to see the current time in major cities simultaneously. Then use the converter to check a specific time across zones. A good approach is to find a time that falls within business hours (9 AM โ 6 PM) for all participants โ typically late afternoon in Europe pairs well with morning in the Americas.
Is this tool free?
Yes, completely free with no sign-up required. All conversions happen in your browser using the JavaScript Intl API โ no data is sent to any server.