Greenwich Mean Time to India Standard Time
Convert times between Greenwich Mean Time (GMT, UTC+0:00) and India Standard Time (IST, UTC+5:30). India Standard Time is 5.5 hours ahead of Greenwich Mean Time in standard time. During daylight saving time this difference changes to 4.5 hours.
UTC+0:00 / +1:00→UTC+5:30
Live timezone converterUTC Offset Reference
| Timezone | Abbreviation | Standard offset | DST offset | Country |
|---|---|---|---|---|
| Greenwich Mean Time | GMT / BST | UTC+0:00 | UTC+1:00 | United Kingdom |
| India Standard Time | IST | UTC+5:30 | — | India |
* DST offset applies during summer months. Exact transition dates vary by year.
Standard Time Conversion (GMT → IST)
| Greenwich Mean Time | India Standard Time |
|---|---|
| 12:00 AM GMT | 5.5:00 AM IST |
| 6:00 AM GMT | 11.5:00 AM IST |
| 9:00 AM GMT | 2.5:00 PM IST |
| 12:00 PM GMT | 5.5:00 PM IST |
| 3:00 PM GMT | 8.5:00 PM IST |
| 6:00 PM GMT | 11.5:00 PM IST |
| 9:00 PM GMT | 2.5:00 AM (next day) IST |
Summer (DST) Conversion (BST → IST)
| Greenwich Mean Time (summer) | India Standard Time (summer) |
|---|---|
| 12:00 AM BST | 4.5:00 AM IST |
| 6:00 AM BST | 10.5:00 AM IST |
| 9:00 AM BST | 1.5:00 PM IST |
| 12:00 PM BST | 4.5:00 PM IST |
| 3:00 PM BST | 7.5:00 PM IST |
| 6:00 PM BST | 10.5:00 PM IST |
| 9:00 PM BST | 1.5:00 AM (next day) IST |
Daylight Saving Time (DST) Notes
- Greenwich Mean Time observes DST. Clocks advance 1 hour to BST (UTC+1:00) roughly from month 3 to 10.
- The offset difference shifts between 5.5h (standard) and 4.5h (DST season). Always verify the current offset using the live converter below.
Frequently Asked Questions
How do I convert GMT to IST?
Add 5.5 hours to the GMT time to get IST. For example, 9:00 AM GMT = 2.5:00 PM IST.
What is the current UTC offset for Greenwich Mean Time?
Greenwich Mean Time is UTC+0:00 during standard time (GMT) and UTC+1:00 during summer daylight saving time (BST).
Is India Standard Time ahead or behind Greenwich Mean Time?
India Standard Time is 5.5 hours ahead of Greenwich Mean Time in standard time.
When is a good time to schedule a meeting between GMT and IST?
Due to the 5.5-hour difference, business-hours overlap may be limited. Use the live timezone converter to find a mutually convenient time.
Related Timezone Conversions
Greenwich Mean Time → Central European TimeGMT / CETGreenwich Mean Time → Eastern European TimeGMT / EETGreenwich Mean Time → Moscow TimeGMT / MSKGreenwich Mean Time → Turkey TimeGMT / TRTGreenwich Mean Time → Pakistan Standard TimeGMT / PKTGreenwich Mean Time → Bangladesh Standard TimeGMT / BSTGreenwich Mean Time → US Eastern TimeGMT / ESTGreenwich Mean Time → China Standard TimeGMT / CST
Need the exact current time?
Use the live ToolsHub timezone converter to see current times, DST status, and schedule across time zones.