= Mathmatives

GMT to IST Time Converter

Content updated .

This page converts Greenwich Mean Time (UTC) (GMT) to India Standard Time (IST). India is 5 hours 30 minutes ahead of GMT in the January and July 2026 examples. Matching samples alone do not establish the offset for every historical or future date.

Select the actual event date and time above. This page follows the city zones Etc/UTC and Asia/Kolkata, not a permanently fixed abbreviation. For example, EST is UTC−5 but New York uses EDT (UTC−4) during daylight saving; PST and PDT likewise differ by an hour. BST means British Summer Time, while London uses GMT in winter. IST on these pages means India Standard Time, not Irish or Israel time.

Daylight saving time (DST, sometimes called daylight savings) can alter a meeting's time difference. Different countries may switch on different weekends, or not switch at all. January and July tables are examples: use a dated conversion around the transition weeks and check the displayed abbreviations.

Current time around the world

ZoneLocal time nowUTC offset

The time difference

ConversionAdd to GMT
UTC to IST+5:30

Destination time = source time + destination UTC offset − source UTC offset (for the event date).

If the result passes midnight, the date moves forward (or back) by a day. The converter above shows the day change explicitly.

GMT to IST conversion table

UTC to IST — January 15, 2026 example

Greenwich Mean Time (UTC) (UTC)India Standard Time (IST)
12:00 AM5:30 AM
1:00 AM6:30 AM
2:00 AM7:30 AM
3:00 AM8:30 AM
4:00 AM9:30 AM
5:00 AM10:30 AM
6:00 AM11:30 AM
7:00 AM12:30 PM
8:00 AM1:30 PM
9:00 AM2:30 PM
10:00 AM3:30 PM
11:00 AM4:30 PM
12:00 PM5:30 PM
1:00 PM6:30 PM
2:00 PM7:30 PM
3:00 PM8:30 PM
4:00 PM9:30 PM
5:00 PM10:30 PM
6:00 PM11:30 PM
7:00 PM12:30 AM (next day)
8:00 PM1:30 AM (next day)
9:00 PM2:30 AM (next day)
10:00 PM3:30 AM (next day)
11:00 PM4:30 AM (next day)

Best times for a meeting between GMT and India

These sample hours fall between 9 AM and 6 PM in both cities on the table dates. Confirm each occurrence of a recurring meeting, especially during March, April, October and November:

When GMT is on UTC:

Clock changes, repeated times and time-zone data

A forward clock change skips some local times; a backward change repeats them. If your event falls in the repeated hour, confirm which UTC offset the organiser means. Avoid assuming that a local time alone identifies one instant. Future government decisions can change the rules, and an outdated browser can have outdated time-zone data.

References: IANA Time Zone Database and NIST daylight-saving explanation. US rules are not worldwide rules.

Frequently asked questions

What is the time difference between GMT and IST?

India is 5 hours 30 minutes ahead of GMT in the January and July 2026 examples. Matching samples alone do not establish the offset for every historical or future date.

How does daylight saving affect this conversion?

The calculator follows the dated rules for Etc/UTC and Asia/Kolkata. A zone may change its UTC offset for summer, while another may not. India and UTC do not currently observe DST; New York, Chicago, Los Angeles and London do. Check the selected date rather than treating an abbreviation or one seasonal sample as a year-round offset.

What time is 9 AM GMT in IST?

9:00 AM UTC is 2:30 PM IST.

How do I convert a different date or time?

Enter the date and time at the top of this page. The converter uses your browser's time zone database, so it applies the correct offset for that specific date, including the weeks around clock changes.

Related calculators and tools

This calculator is for general information and education only. It is not professional advice. Confirm important decisions with a qualified adviser.