Timezone conversion
IST to GMT Time — Convert India Standard Time to Greenwich Mean Time
GMT is currently 5 hours and 30 minutes behind IST. This offset stays the same all year — neither zone shifts for daylight saving in a way that changes it.
GMT is currently 5 hours and 30 minutes behind IST.
Abbreviation disambiguation
On Clockjumper, IST refers to India Standard Time (UTC+5:30). The same three letters are also used for Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1) — check the city or UTC offset to be sure which is meant.
GMT is equivalent to UTC for everyday use. In the UK it also refers to the winter (non-daylight-saving) time; in summer the UK moves to BST (UTC+1).
Interactive converter
12:00PM
Select both cities to see the converted time.
Full IST to GMT conversion table
| IST | GMT |
|---|---|
| 12:00 AM | 6:30 PM(previous day) |
| 1:00 AM | 7:30 PM(previous day) |
| 2:00 AM | 8:30 PM(previous day) |
| 3:00 AM | 9:30 PM(previous day) |
| 4:00 AM | 10:30 PM(previous day) |
| 5:00 AM | 11:30 PM(previous day) |
| 6:00 AM | 12:30 AM |
| 7:00 AM | 1:30 AM |
| 8:00 AM | 2:30 AM |
| 9:00 AM | 3:30 AM |
| 10:00 AM | 4:30 AM |
| 11:00 AM | 5:30 AM |
| 12:00 PM | 6:30 AM |
| 1:00 PM | 7:30 AM |
| 2:00 PM | 8:30 AM |
| 3:00 PM | 9:30 AM |
| 4:00 PM | 10:30 AM |
| 5:00 PM | 11:30 AM |
| 6:00 PM | 12:30 PM |
| 7:00 PM | 1:30 PM |
| 8:00 PM | 2:30 PM |
| 9:00 PM | 3:30 PM |
| 10:00 PM | 4:30 PM |
| 11:00 PM | 5:30 PM |
Daylight saving and how the gap changes
The IST → GMT offset stays constant across the year — neither zone shifts for daylight saving in a way that changes this gap.
Frequently asked questions
- Is GMT ahead of or behind IST right now?
- GMT is currently 5 hours and 30 minutes behind IST.
- What is the current IST to GMT time difference?
- Right now the gap is 5 hours and 30 minutes — GMT is 5 hours and 30 minutes behind IST.
- Does the IST → GMT offset change during the year?
- No. Neither India Standard Time nor Greenwich Mean Time shifts for daylight saving in a way that changes this offset — the gap is the same all year.
- Does IST observe daylight saving time?
- No — India Standard Time stays at a fixed UTC offset year-round.
- Does GMT observe daylight saving time?
- No — Greenwich Mean Time stays at a fixed UTC offset year-round.
- What time is 3 AM IST in GMT?
- 3:00 AM IST is 9:30 PM (previous day) GMT.
- What time is 8 AM IST in GMT?
- 8:00 AM IST is 2:30 AM GMT.
- What time is 9 AM IST in GMT?
- 9:00 AM IST is 3:30 AM GMT.
- What time is 10 AM IST in GMT?
- 10:00 AM IST is 4:30 AM GMT.
- What time is 11 AM IST in GMT?
- 11:00 AM IST is 5:30 AM GMT.
- What time is 12 PM (noon) IST in GMT?
- 12:00 PM IST is 6:30 AM GMT.
- What time is 2 PM IST in GMT?
- 2:00 PM IST is 8:30 AM GMT.
- What time is 3 PM IST in GMT?
- 3:00 PM IST is 9:30 AM GMT.
- What time is 4 PM IST in GMT?
- 4:00 PM IST is 10:30 AM GMT.
- What time is 5 PM IST in GMT?
- 5:00 PM IST is 11:30 AM GMT.
- What time is 9 PM IST in GMT?
- 9:00 PM IST is 3:30 PM GMT.
- What time is 10 PM IST in GMT?
- 10:00 PM IST is 4:30 PM GMT.
- When is the best time to schedule a call between IST and GMT?
- The working-hours overlap (09:00–17:00 in both zones) runs roughly 2:30 PM – 5:00 PM IST (≈ 2 hours and 30 minutes). The midpoint of that window — 3:45 PM IST, 10:15 AM GMT — is the safest single slot to propose for a live call.
- What time zone does IST refer to?
- IST refers to India Standard Time (IANA: Asia/Kolkata).
- What time zone does GMT refer to?
- GMT refers to Greenwich Mean Time (IANA: UTC).
- Is IST on this page the same as other zones that share the letters "IST"?
- On Clockjumper, IST refers to India Standard Time (UTC+5:30). The same three letters are also used for Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1) — check the city or UTC offset to be sure which is meant.
- Is GMT on this page the same as other zones that share the letters "GMT"?
- GMT is equivalent to UTC for everyday use. In the UK it also refers to the winter (non-daylight-saving) time; in summer the UK moves to BST (UTC+1).