Time Zone Converter

1. Enter the date and time — 2026-09-26 18:30, 26 Sep 2026 6:30 PM, or an ISO timestamp with Z or an offset.
2. Choose the From zone the time was written in, then add one or more target zones. Zones are searchable by city or region, such as Kolkata, New_York or London.
3. Read the rows and copy what you need, or use Format this date to open the result in the Date Formatter, or Convert to timestamp for the Unix Timestamp Converter.

#An evening meeting in India

From Asia/Kolkata, input 2026-09-26 18:30, with four target zones:

Asia/Kolkata             Sat 26 Sep 2026 18:30 (+05:30 GMT+5:30)
UTC                      Sat 26 Sep 2026 13:00 (+00:00 UTC)
America/New_York         Sat 26 Sep 2026 09:00 (-04:00 EDT)
America/Los_Angeles      Sat 26 Sep 2026 06:00 (-07:00 PDT)
Europe/London            Sat 26 Sep 2026 14:00 (+01:00 GMT+1)

#A UTC timestamp across Asia-Pacific

The input has a Z, so it is already an exact instant; the From zone only decides the first row:

UTC                      Sat 26 Sep 2026 13:00 (+00:00 UTC)
Asia/Kolkata             Sat 26 Sep 2026 18:30 (+05:30 GMT+5:30)
Asia/Tokyo               Sat 26 Sep 2026 22:00 (+09:00 GMT+9)
Australia/Sydney         Sat 26 Sep 2026 23:00 (+10:00 GMT+10)

#The same 9 a.m. in Los Angeles, before and after the clocks change

Europe ends summer time on 25 October 2026 and the United States on 1 November, so the gap to India and London shifts twice:

#Half-hour and quarter-hour offsets

From Asia/Kathmandu, 2026-09-26 18:30:

Asia/Kathmandu           Sat 26 Sep 2026 18:30 (+05:45 GMT+5:45)
Asia/Kolkata             Sat 26 Sep 2026 18:15 (+05:30 GMT+5:30)
Australia/Adelaide       Sat 26 Sep 2026 22:15 (+09:30 GMT+9:30)

The Time Zone Converter is a form, not an editor, so it has no settings drawer. These are its controls:

• Date and time — ISO 8601 (2026-09-26T13:00:00Z), SQL-style 2026-09-26 18:30, 26 Sep 2026 6:30 PM, Unix timestamps, or a time alone (18:30) for today. A value with Z or an offset is an exact instant; a value without one is read in the From zone.
• From zone — the IANA zone the input was written in. It defaults to your browser's zone; when the browser reports an old alias such as Asia/Calcutta, the current name Asia/Kolkata is shown instead.
• Target zones — one or more IANA zones shown as rows, each with the local date, time, UTC offset and abbreviation. The date is shown on every row because conversions often cross midnight.

#Pacific time shows −07:00, not −08:00

"PST" is often used loosely for Pacific time all year, but PST (−08:00) applies only in winter. From March to November, America/Los_Angeles is on PDT (−07:00). Pick city zones rather than abbreviations; if you really mean a fixed −08:00, enter it as an offset, such as 2026-09-26T06:00:00-08:00.

#A meeting moved by an hour in late March or October

One of the zones changed its clocks. The United States, Europe and Australia switch on different dates, and India does not observe daylight saving time at all, so the gap between, say, New York and Kolkata is 9½ hours in summer and 10½ in winter. Always convert with the actual meeting date.

#A time that does not exist

During the spring change, clocks skip an hour. 2026-03-08 02:30 in America/New_York never happened, so it is moved forward to 03:30 EDT (07:30 UTC). Check times between 02:00 and 03:00 on transition days.

#A time that happens twice

During the autumn change, an hour repeats. 2026-11-01 01:30 in New York occurs twice; the converter uses the first occurrence, 01:30 EDT (05:30 UTC). Add an explicit offset, such as -05:00, to select the second.

#The date is a day off

The target zone is across midnight. 23:30 in Kolkata on 26 September is 11:00 the same day in Los Angeles, but 03:00 on the 27th in Tokyo. Each row shows its own date for this reason.

#How do I convert IST to UTC?

Subtract 5 hours 30 minutes. India Standard Time is UTC+05:30 all year, with no daylight saving time, so 18:30 IST is 13:00 UTC on the same day. Choose Asia/Kolkata as the From zone and add UTC as a target, or paste an ISO time with +05:30.

#How do I convert UTC to IST?

Add 5 hours 30 minutes: 13:00 UTC is 18:30 IST, and 20:00 UTC is 01:30 IST the next day. Enter the UTC time with a Z, for example 2026-09-26T13:00:00Z, and add Asia/Kolkata as a target.

#What is the time difference between PST and IST?

India is 13½ hours ahead of Pacific Standard Time (November to March) and 12½ hours ahead of Pacific Daylight Time (March to November). So 9:00 in Los Angeles is 22:30 in India in winter and 21:30 in summer. Enter the actual date to get the right one.

#What is an IANA time zone?

IANA zones, such as Asia/Kolkata or America/New_York, are named regions in the tz database with a full history of offsets and daylight saving rules. They are what operating systems, browsers, Java, Python's zoneinfo and PostgreSQL use. Store zones by IANA name, never by abbreviation or current offset.

#Should I store times in UTC or local time?

Store instants — log entries, payments, created-at fields — in UTC or with an explicit offset, and convert for display. For future events tied to a place, such as a 9:00 meeting in London next year, also store the IANA zone, because daylight saving rules can change before the event happens.

#Is my data sent anywhere?

No. The conversion uses the time zone database built into your browser, inside an isolated frame that blocks network requests. Your chosen zones are remembered on this device; the dates you type are not stored unless you turn on "Remember my last input".

Format the converted time in a specific pattern with the Date Formatter, get its epoch value with the Unix Timestamp Converter, or show it as "in 2 hours" with the Relative Time Formatter. Browse Date & Number for more.