IST to UTC Converter
Convert India Standard Time to UTC. Subtract 5 hours 30 minutes; the date adjusts automatically.
24-hour IST to UTC conversion table
| IST | UTC | UTC date |
|---|---|---|
| 00:00 | 18:30 | Previous day |
| 01:00 | 19:30 | Previous day |
| 02:00 | 20:30 | Previous day |
| 03:00 | 21:30 | Previous day |
| 04:00 | 22:30 | Previous day |
| 05:00 | 23:30 | Previous day |
| 06:00 | 00:30 | Same day |
| 07:00 | 01:30 | Same day |
| 08:00 | 02:30 | Same day |
| 09:00 | 03:30 | Same day |
| 10:00 | 04:30 | Same day |
| 11:00 | 05:30 | Same day |
| 12:00 | 06:30 | Same day |
| 13:00 | 07:30 | Same day |
| 14:00 | 08:30 | Same day |
| 15:00 | 09:30 | Same day |
| 16:00 | 10:30 | Same day |
| 17:00 | 11:30 | Same day |
| 18:00 | 12:30 | Same day |
| 19:00 | 13:30 | Same day |
| 20:00 | 14:30 | Same day |
| 21:00 | 15:30 | Same day |
| 22:00 | 16:30 | Same day |
| 23:00 | 17:30 | Same day |
How to convert IST to UTC
India Standard Time is 5 hours and 30 minutes ahead of Coordinated Universal Time. To convert an Indian time to UTC, subtract 05:30. If the answer falls before midnight, move the UTC date back by one day.
UTC = IST − 5 hours 30 minutes
For example, 9:00 AM IST = 3:30 AM UTC on the same date. At 2:00 AM IST on 21 September, UTC is 8:30 PM on 20 September. Exactly 5:30 AM IST is midnight UTC on the same date.
Use the converter
- Select a date and enter the time in India Standard Time.
- Read the UTC result and its date. Changes update automatically.
- Use the slider to explore other times, or select Use current time.
- Switch between 12-hour and 24-hour result formats. The time input follows your browser’s regional settings.
- Copy the result, including seconds. The two live clocks below the converter keep running every second while you explore other times.
The Swap button keeps the same moment and changes the direction to UTC → IST. For a dedicated reverse converter, visit UTC to IST.
IST, UTC and date changes
This tool uses IST to mean India Standard Time, the time used in New Delhi, Mumbai, Kolkata, Chennai and throughout India. It does not mean Irish Standard Time or Israel Standard Time.
The converter applies a fixed +05:30 offset for India and +00:00 for UTC. It is designed for everyday scheduling, meeting times, online events and timestamps. It is not a historical time-zone database; older civil-time rules and leap seconds are outside its scope.
For IST times from 00:00 through 05:29, UTC falls on the previous date. From 05:30 through 23:59, the UTC date is the same as the IST date.
FAQ on IST to UTC
India Standard Time is 5 hours 30 minutes ahead of UTC. Subtract 5 hours 30 minutes to convert IST to UTC.
12 PM IST (noon) is 6:30 AM UTC on the same date. 12 AM IST (midnight) is 6:30 PM UTC on the previous date.
9 AM IST is 3:30 AM UTC on the same date.
Subtracting 5 hours 30 minutes from an IST time before 5:30 AM crosses midnight. The UTC date is therefore one day earlier.
No. This converter uses fixed offsets: IST at UTC+05:30 and UTC at UTC+00:00.