IST to Thailand Time Converter
ICT is 1 hour 30 minutes ahead of IST. 9:00 AM IST = 10:30 AM ICT.
ICT is 1 hour 30 minutes ahead of IST. To convert IST to Thailand Time, add 1 hour 30 minutes to the IST time: 9:00 AM IST = 10:30 AM ICT.
IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time). Thailand Time (Thailand time) is used in Thailand.
IST here means India Standard Time, not Irish or Israel Standard Time.
IST to Thailand Time time conversion table
IST to Thailand Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| IST | Thailand Time | Day |
|---|---|---|
| 12:00 AM IST | 1:30 AM ICT | night |
| 1:00 AM IST | 2:30 AM ICT | night |
| 2:00 AM IST | 3:30 AM ICT | night |
| 3:00 AM IST | 4:30 AM ICT | night |
| 4:00 AM IST | 5:30 AM ICT | night |
| 5:00 AM IST | 6:30 AM ICT | — |
| 6:00 AM IST | 7:30 AM ICT | — |
| 7:00 AM IST | 8:30 AM ICT | — |
| 8:00 AM IST | 9:30 AM ICT | — |
| 9:00 AM IST | 10:30 AM ICT | work hours |
| 10:00 AM IST | 11:30 AM ICT | work hours |
| 11:00 AM IST | 12:30 PM ICT | work hours |
| 12:00 PM IST | 1:30 PM ICT | work hours |
| 1:00 PM IST | 2:30 PM ICT | work hours |
| 2:00 PM IST | 3:30 PM ICT | work hours |
| 3:00 PM IST | 4:30 PM ICT | work hours |
| 4:00 PM IST | 5:30 PM ICT | — |
| 5:00 PM IST | 6:30 PM ICT | — |
| 6:00 PM IST | 7:30 PM ICT | — |
| 7:00 PM IST | 8:30 PM ICT | — |
| 8:00 PM IST | 9:30 PM ICT | — |
| 9:00 PM IST | 10:30 PM ICT | night |
| 10:00 PM IST | 11:30 PM ICT | night |
| 11:00 PM IST | 12:30 AM ICT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert IST to Thailand Time
Add 1 hour 30 minutes to the IST time to get Thailand Time.
Example: 9:00 AM IST = 10:30 AM ICT.
Across midnight: 11:00 PM IST = 12:30 AM ICT (next day). The date changes, so always check the day as well as the hour.
Time difference between IST and Thailand Time
The time difference between IST and Thailand Time is 1 hour 30 minutes all year – ICT is ahead of IST.
IST and Thailand Time during daylight saving time
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
- Thailand Time does not observe daylight saving time; it stays on UTC+7 all year.
Best time for a meeting between IST and Thailand Time
IST and Thailand Time share 6 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 3:30 PM IST lands between 10:30 AM and 5:00 PM ICT, inside working hours for both.
IST to Thailand Time FAQ
What is the time difference between IST and Thailand Time?
ICT is 1 hour 30 minutes ahead of IST all year. 9:00 AM IST = 10:30 AM ICT.
What is 9 AM IST in Thailand Time?
9:00 AM IST is 10:30 AM ICT.
What is 12 PM (noon) IST in Thailand Time?
12:00 PM IST is 1:30 PM ICT.
Is Thailand Time ahead of or behind IST?
ICT is 1 hour 30 minutes ahead of IST, so it is later in Thailand Time 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 Thailand Time change for daylight saving time?
No. Thailand Time 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 Thailand Time?
IST and Thailand Time share 6 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 3:30 PM IST lands between 10:30 AM and 5:00 PM ICT, inside working hours for both.
Related conversions
Convert Thailand Time to IST
Convert IST to other time zones
Convert other time zones to Thailand Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.