IST to GMT Converter

GMT is 5 hours 30 minutes behind IST. 9:00 AM IST = 3:30 AM GMT.

⇄ Swap
ISTfrom
India Standard Time
--:--
 
Greenwich Mean Time
--:--
 

GMT is 5 hours 30 minutes behind IST. To convert IST to GMT, subtract 5 hours 30 minutes from the IST time: 9:00 AM IST = 3:30 AM GMT.

IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time). GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year.

IST here means India Standard Time, not Irish or Israel Standard Time. The UK is on GMT only in winter; in summer it uses BST (UTC+1).

IST to GMT time conversion table

IST to GMT on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.

ISTGMTDay
12:00 AM IST6:30 PM GMTprevious day
1:00 AM IST7:30 PM GMTprevious day
2:00 AM IST8:30 PM GMTprevious day
3:00 AM IST9:30 PM GMTprevious day
4:00 AM IST10:30 PM GMTprevious day
5:00 AM IST11:30 PM GMTprevious day
6:00 AM IST12:30 AM GMTnight
7:00 AM IST1:30 AM GMTnight
8:00 AM IST2:30 AM GMTnight
9:00 AM IST3:30 AM GMTnight
10:00 AM IST4:30 AM GMTnight
11:00 AM IST5:30 AM GMTnight
12:00 PM IST6:30 AM GMT—
1:00 PM IST7:30 AM GMT—
2:00 PM IST8:30 AM GMT—
3:00 PM IST9:30 AM GMTwork hours
4:00 PM IST10:30 AM GMTwork hours
5:00 PM IST11:30 AM GMT—
6:00 PM IST12:30 PM GMT—
7:00 PM IST1:30 PM GMT—
8:00 PM IST2:30 PM GMT—
9:00 PM IST3:30 PM GMT—
10:00 PM IST4:30 PM GMT—
11:00 PM IST5:30 PM GMT—
  • Work rows — 9 AM–5 PM in both places
  • Night in the destination (10 PM–6 AM)

How to convert IST to GMT

Subtract 5 hours 30 minutes from the IST time to get GMT.

Example: 9:00 AM IST = 3:30 AM GMT.

Across midnight: 1:00 AM IST = 7:30 PM GMT (previous day). The date changes, so always check the day as well as the hour.

Time difference between IST and GMT

The time difference between IST and GMT is 5 hours 30 minutes all year – GMT is behind IST.

IST and GMT during daylight saving time

  • IST does not observe daylight saving time; it stays on UTC+5:30 all year.
  • GMT does not observe daylight saving time; it stays on UTC+0 all year.

Best time for a meeting between IST and GMT

IST and GMT share 2 hours 30 minutes of the 9 AM–5 PM working day. Any time between 2:30 PM and 5:00 PM IST lands between 9:00 AM and 11:30 AM GMT, inside working hours for both.

Plan a meeting across more time zones.

IST to GMT FAQ

What is the time difference between IST and GMT?

GMT is 5 hours 30 minutes behind IST all year. 9:00 AM IST = 3:30 AM GMT.

What is 9 AM IST in GMT?

9:00 AM IST is 3:30 AM GMT.

What is 12 PM (noon) IST in GMT?

12:00 PM IST is 6:30 AM GMT.

Is GMT ahead of or behind IST?

GMT is 5 hours 30 minutes behind IST, so it is earlier in GMT than in IST.

Does IST change for daylight saving time?

No. IST stays on the same offset all year, so conversions never shift for daylight saving time.

Does GMT change for daylight saving time?

No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.

What is the best time for a meeting between IST and GMT?

IST and GMT share 2 hours 30 minutes of the 9 AM–5 PM working day. Any time between 2:30 PM and 5:00 PM IST lands between 9:00 AM and 11:30 AM GMT, inside working hours for both.

Related conversions

Convert GMT to IST

Convert IST to other time zones

Convert other time zones to GMT

IST to GMT by hour

Learn more

Updated 7 November 2026. Time zone data: IANA tz database.