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GST to IST time converter

IST is 1h 30m ahead of GST all year. 9:00 AM GST is 10:30 AM IST.

How many hours is IST from GST?

Today, IST is 1h 30m ahead of GST.

IST is 1h 30m ahead of GST all year.

What's the best time for a meeting between GST and IST?

9:00 AM to 4:30 PM GST (10:30 AM to 6:00 PM IST) falls inside 9 AM to 6 PM work hours on both sides.

What time is it in IST for each hour in GST?

Every hour of today in GST, with daylight saving applied. Green means work hours (9 AM to 6 PM) on both sides.

GSTISTDay
12:00 AM1:30 AM
1:00 AM2:30 AM
2:00 AM3:30 AM
3:00 AM4:30 AM
4:00 AM5:30 AM
5:00 AM6:30 AM
6:00 AM7:30 AM
7:00 AM8:30 AM
8:00 AM9:30 AM
9:00 AM10:30 AM
10:00 AM11:30 AM
11:00 AM12:30 PM
12:00 PM1:30 PM
1:00 PM2:30 PM
2:00 PM3:30 PM
3:00 PM4:30 PM
4:00 PM5:30 PM
5:00 PM6:30 PM
6:00 PM7:30 PM
7:00 PM8:30 PM
8:00 PM9:30 PM
9:00 PM10:30 PM
10:00 PM11:30 PM
11:00 PM12:30 AMnext day

Questions

IST is 1h 30m ahead of GST all year.

No. Neither side changes its clocks, so the gap stays 1h 30m all year.

9:00 AM GST is 10:30 AM IST.

9:00 AM to 4:30 PM GST (10:30 AM to 6:00 PM IST) falls inside 9 AM to 6 PM work hours on both sides.

Drag on the GST clock above to mark when you're free, then tap Copy link or Copy image. The IST clock shows them in their time, and the link opens in their own time zone with no sign-up.

Related conversions

More with GST or IST: IST to EST, IST to PST, IST to CST, IST to UTC, IST to GMT, IST to EDT, EDT to IST, IST to PDT, PDT to IST, IST to CDT, CDT to IST, BST to IST, IST to BST, CET to IST, IST to CET, AEST to IST, SGT to IST, IST to MST, IST to AEST, IST to SGT, IST to JST, IST to NZT

How this page is made: every time here is computed from the IANA time zone database for the date shown, the same data your phone clock uses. Checked October 15, 2026. Spot a wrong time? Tell us.