GMT to IST Converter
Enter a GMT time to see the matching time in Delhi, Mumbai, Bengaluru or Chennai. Neither side has daylight saving, so the answer is the same on every date.
ISTIndia Standard Time
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In short
- 1India Standard Time is UTC+5:30 all year.
- 2GMT on this page is the fixed UTC+0 reference.
- 3So India is always 5 h 30 min ahead of GMT.
- 4UK local time is GMT only in winter; in summer London is 4 h 30 min behind India.
GMT hours in India time
| GMT time | IST time |
|---|---|
| 12:00 AM | 5:30 AM |
| 1:00 AM | 6:30 AM |
| 2:00 AM | 7:30 AM |
| 3:00 AM | 8:30 AM |
| 4:00 AM | 9:30 AM |
| 5:00 AM | 10:30 AM |
| 6:00 AM | 11:30 AM |
| 7:00 AM | 12:30 PM |
| 8:00 AM | 1:30 PM |
| 9:00 AM | 2:30 PM |
| 10:00 AM | 3:30 PM |
| 11:00 AM | 4:30 PM |
| 12:00 PM | 5:30 PM |
| 1:00 PM | 6:30 PM |
| 2:00 PM | 7:30 PM |
| 3:00 PM | 8:30 PM |
| 4:00 PM | 9:30 PM |
| 5:00 PM | 10:30 PM |
| 6:00 PM | 11:30 PM |
| 7:00 PM | 12:30 AM+1 next day |
| 8:00 PM | 1:30 AM+1 next day |
| 9:00 PM | 2:30 AM+1 next day |
| 10:00 PM | 3:30 AM+1 next day |
| 11:00 PM | 4:30 AM+1 next day |
Why the answer never changes
India uses a single zone set half an hour off the usual grid, measured from the 82.5° east meridian near Mirzapur. The country does not use daylight saving, and fixed GMT has none by definition, as shown in the IANA time zone database. With neither clock moving, the gap is constant.
The half hour is the part people get wrong. Add five hours and then thirty minutes: 08:00 GMT is 1:30 PM in India, and 18:30 GMT is exactly midnight. Anything later in the GMT evening is already the next day in India.
The UK makes it two answers
UK time is not GMT all year
From the last Sunday in March to the last Sunday in October the UK is on BST, one hour ahead of GMT, as GOV.UK lists.
- Winter: 9:00 AM in London is 2:30 PM in India.
- Summer: 9:00 AM in London is 1:30 PM in India.
- For meetings with UK colleagues, use the London clock instead of fixed GMT.
Flight times, exam slots and server logs that say GMT or UTC can be converted with the single 5 h 30 min rule. A 14:00 GMT online test starts at 7:30 PM in India; a 23:00 GMT maintenance window begins at 4:30 AM the next morning. The live Delhi clock shows India now, and IST to GMT works the other way.
GMT to IST questions
How many hours ahead of GMT is India?
5 hours 30 minutes, every day of the year.
What is 10:00 GMT in India?
3:30 PM IST the same day.
Is India 4 h 30 min or 5 h 30 min ahead of the UK?
Both, depending on the season. India is 5 h 30 min ahead of GMT, which is UK time in winter. In summer the UK is on BST, so India is 4 h 30 min ahead of London.
When does a GMT evening become the next day in India?
From 18:30 GMT. That moment is midnight in India.