GMT to IST Converter
India Standard Time is 5 hours and 30 minutes ahead of GMT. Enter a time to convert, or see the current time in both zones.
Enter a valid date and time.
What is the time difference between GMT and IST?
What is the time difference between GMT and IST? India Standard Time is 5 hours and 30 minutes ahead of GMT. India does not observe daylight saving, so this half-hour-aligned gap holds all year (though UK clocks move to BST, GMT+1, in summer).
Standard and daylight time in Greenwich Mean Time and India Standard Time
Strictly, GMT and IST are the winter (standard) names. In summer the zones use daylight time names such as GMT and IDT. People often say "GMT" all year, so this page converts using the real rules for each date: UTC and Asia/Kolkata in the IANA time zone database.
Frequently asked questions
Does daylight saving change the GMT to IST difference?
India does not observe daylight saving, so this half-hour-aligned gap holds all year (though UK clocks move to BST, GMT+1, in summer).
Which time zone database is used?
Your browser's built-in copy of the IANA time zone database, which is updated with browser releases.
More time zones
See all- Time Zone ConverterConvert any time between any two zones.
- CST to ESTCentral Time to Eastern Time, with DST handled.
- EST to PSTEastern Time to Pacific Time, with DST handled.
- EST to CSTEastern Time to Central Time, with DST handled.
- PST to CSTPacific Time to Central Time, with DST handled.
- UTC to ESTCoordinated Universal Time to Eastern Time, with DST handled.
- MST to ESTMountain Time to Eastern Time, with DST handled.
- CST to PSTCentral Time to Pacific Time, with DST handled.