Timezone conversion
Answer: India Standard Time is 5 hours 30 minutes ahead of GMT. Add 5 hours 30 minutes to GMT; if the result passes midnight, use the next calendar day.
Current check: IST is 5 hours 30 minutes ahead of GMT. Best overlap: 9:59 AM-11:30 AM in GMT, which is 3:29 PM-5:00 PM in IST.
Key conversion facts
Suggested meeting window
9:59 AM-10:59 AM GMT -> 3:29 PM-4:29 PM IST
Use this page when you have a specific GMT time and need the matching IST time before sending it to someone else.
Use the converter for the exact GMT time, then check whether the resulting IST time is still reasonable for a person.
For launch, webinar, support, or incident work, copy the converted time with the date because the target side may land on a different day.
When several people are involved, move from conversion to the meeting planner before committing the time.
When this page is useful
These notes focus on the scheduling or conversion mistakes people actually make before sending a time.
Use GMT to IST when a UK or UTC-based schedule needs to be shared with India without asking people to calculate the five-and-a-half-hour offset.
This page is useful for webinars, support handoffs, and remote team updates where India receives the invite after the source time is fixed.
Use this conversion when an invite crosses into India because IST uses a half-hour offset that people often miss in mental math.
Suggested conversion note: confirm the selected GMT time, copy the matching IST time, and include the date if the result crosses midnight.
Pick the actual date first so GMT to IST reflects daylight-saving rules for that day.
A correct conversion can still be a bad meeting time. If a real person must attend, check the overlap before sending.
Send the GMT time and the IST time together so nobody has to recalculate.
| GMT | 24h | IST | 24h | Date |
|---|---|---|---|---|
| 12:00 AM | 00:00 | 5:30 AM | 05:30 | same day |
| 1:00 AM | 01:00 | 6:30 AM | 06:30 | same day |
| 2:00 AM | 02:00 | 7:30 AM | 07:30 | same day |
| 3:00 AM | 03:00 | 8:30 AM | 08:30 | same day |
| 4:00 AM | 04:00 | 9:30 AM | 09:30 | same day |
| 5:00 AM | 05:00 | 10:30 AM | 10:30 | same day |
| 6:00 AM | 06:00 | 11:30 AM | 11:30 | same day |
| 7:00 AM | 07:00 | 12:30 PM | 12:30 | same day |
| 8:00 AM | 08:00 | 1:30 PM | 13:30 | same day |
| 9:00 AM | 09:00 | 2:30 PM | 14:30 | same day |
| 10:00 AM | 10:00 | 3:30 PM | 15:30 | same day |
| 11:00 AM | 11:00 | 4:30 PM | 16:30 | same day |
| 12:00 PM | 12:00 | 5:30 PM | 17:30 | same day |
| 1:00 PM | 13:00 | 6:30 PM | 18:30 | same day |
| 2:00 PM | 14:00 | 7:30 PM | 19:30 | same day |
| 3:00 PM | 15:00 | 8:30 PM | 20:30 | same day |
| 4:00 PM | 16:00 | 9:30 PM | 21:30 | same day |
| 5:00 PM | 17:00 | 10:30 PM | 22:30 | same day |
| 6:00 PM | 18:00 | 11:30 PM | 23:30 | same day |
| 7:00 PM | 19:00 | 12:30 AM | 00:30 | +1 day |
| 8:00 PM | 20:00 | 1:30 AM | 01:30 | +1 day |
| 9:00 PM | 21:00 | 2:30 AM | 02:30 | +1 day |
| 10:00 PM | 22:00 | 3:30 AM | 03:30 | +1 day |
| 11:00 PM | 23:00 | 4:30 AM | 04:30 | +1 day |
Related timezone pages
Timezone questions answered
Add 5 hours 30 minutes to the GMT time. Include the date because evening GMT times can move into the next calendar day in India.
9:00 AM GMT is 2:30 PM IST on the same calendar day.
No. GMT stays at UTC+0 and India does not currently observe daylight saving time, so IST remains 5 hours 30 minutes ahead.
GMT times from 6:30 PM onward convert to the next calendar day in IST. Keep both local dates in invitations and handoff notes.
Data note: useChrono uses IANA timezone identifiers and the platform Intl API. Daylight-saving rules can change, so confirm mission-critical times in your calendar system.
Cookie preferences
We use optional analytics to measure which timezone tools are useful. Advertising storage stays off unless you enable it in Customize.
Read the Cookie Policy and Privacy Policy.