π Time Zone Converter
Convert time between any two time zones instantly.
Converted Time
How to Use This Converter
This time zone converter lets you enter any time and date, pick a source time zone, and instantly see what time it is in another time zone. The converter handles daylight saving time automatically for all regions, so you do not need to know whether DST is currently active in a given location.
Select the source time zone from the list. Common cities are grouped at the top for quick access.
Enter the date and time you want to convert. The current local time is filled in by default.
Select the target time zone. The converted time appears immediately, showing the date, time, and UTC offset.
Check the world clock section to see current times in multiple cities at once.
How Time Zones Work
The world is divided into time zones based on UTC (Coordinated Universal Time). Each zone is expressed as an offset: UTC+5:30 for India, UTC-5 for Eastern Standard Time in the US, UTC+1 for most of Western Europe in winter. The offset tells you how many hours and minutes ahead of or behind UTC that location is. To convert from one time zone to another, you convert both to UTC and then to the target zone.
Daylight saving time (DST) complicates this because the offset changes twice a year in most of North America, Europe, and Australia. During summer, New York shifts from UTC-5 to UTC-4. London shifts from UTC+0 to UTC+1. Countries near the equator and places like Japan, China, and India do not observe DST, so their offset stays constant year-round. This converter uses your browser's built-in timezone database, which is always current and handles all DST transitions automatically.
Common Time Zone Conversions
Frequently Asked Questions
What is UTC?
UTC (Coordinated Universal Time) is the primary time standard. All time zones are expressed as offsets from UTC (e.g., UTC+5:30 for India, UTC-5:00 for Eastern US).
What is DST (Daylight Saving Time)?
Many countries advance their clocks by 1 hour in summer to shift more daylight into evening hours. The browser's Intl API automatically accounts for DST.
What is the difference between UTC and GMT?
Practically identical for most purposes. GMT (Greenwich Mean Time) was the original standard; UTC replaced it in 1972 and is based on atomic time. The two differ by fractions of a second.
How do I convert 9 AM EST to IST?
EST = UTC-5, IST = UTC+5:30. Difference = 10.5 hours. So 9 AM EST = 7:30 PM IST. Our tool handles this automatically.
What is IANA time zone naming?
IANA (IANA TZ Database) names time zones as Region/City: "America/New_York", "Europe/London", "Asia/Kolkata". These names are DST-aware and resolve to the correct offset.