Time Conversion Calculator
IST to Singapore Converter
Convert India Standard Time to Singapore Time with date-aware logic, a 24-hour table, meeting planner, and copy-ready result.
Convert IST to SGT
Choose a date and time in India Standard Time. The calculator will show the matching Singapore Time time.
Suggested meeting times
24-hour IST to SGT conversion table
Full-day conversion for the selected date.
| India Standard Time | Singapore Time | Meeting note |
|---|---|---|
| Select a time and convert to generate the table. | ||
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IST to Singapore: quick answer
To convert India Standard Time to Singapore time, add 2 hours and 30 minutes. For example, 9:00 AM IST is 11:30 AM in Singapore. India Standard Time is UTC+05:30, while Singapore Standard Time is UTC+08:00.
The difference remains 2 hours and 30 minutes throughout the year under current rules because neither India nor Singapore observes daylight saving time.
How to convert IST to Singapore time
- Start with the date and time in India Standard Time.
- Add 2 hours and 30 minutes.
- If the result reaches or passes midnight, advance the Singapore date by one day.
- Label the result as Singapore Standard Time or SGT.
Example: 10:15 PM IST + 2 hours 30 minutes = 12:45 AM in Singapore on the following calendar date.
IST and Singapore time offsets
| Time standard | UTC offset | Daylight saving |
|---|---|---|
| India Standard Time | UTC+05:30 | Not currently observed |
| Singapore Standard Time | UTC+08:00 | Not currently observed |
| Difference | +2 hours 30 minutes | Singapore is ahead |
The converter uses the IANA identifiers Asia/Kolkata and Asia/Singapore. It converts the selected local date and time as one instant and then formats that instant in Singapore, including the correct calendar date.
IST, Singapore and SGT abbreviation guidance
On this page, IST means India Standard Time and SGT means Singapore Standard Time. IST can refer to other time standards in different contexts. For invitations and deadlines, writing “India Standard Time (UTC+05:30)” removes ambiguity.
Common IST to Singapore conversions
| India time (IST) | Singapore time | Date note |
|---|---|---|
| 12:00 AM | 2:30 AM | Same day |
| 6:00 AM | 8:30 AM | Same day |
| 9:00 AM | 11:30 AM | Same day |
| 12:00 PM | 2:30 PM | Same day |
| 2:30 PM | 5:00 PM | Same day |
| 5:00 PM | 7:30 PM | Same day |
| 9:00 PM | 11:30 PM | Same day |
| 9:30 PM | 12:00 AM | Next day |
| 11:45 PM | 2:15 AM | Next day |
Calendar-date changes
IST times from 9:30 PM through 11:59 PM convert to the next calendar date in Singapore. For flight check-ins, online events, release deadlines and international meetings, include both the date and timezone rather than sharing only the clock time.
Best India-to-Singapore meeting window
A practical shared 9-to-5 business-hours window is 9:00 AM-2:30 PM IST, corresponding to 11:30 AM-5:00 PM in Singapore. A 3:00 PM IST meeting begins at 5:30 PM in Singapore, outside a typical 9-to-5 day. Confirm local holidays and team schedules separately.
Formula, methodology and verification
The calculation compares India’s UTC offset of 330 minutes with Singapore’s offset of 480 minutes. The target-minus-source difference is 150 minutes, so the converter adds 2 hours and 30 minutes. Verification covers half-hour arithmetic, next-day and year-boundary rollover, leap-day dates, 12-hour and 24-hour formats, and reciprocal IST-to-Singapore-to-IST tests.
Representative QA cases include 9:00 AM IST = 11:30 AM Singapore, 9:30 PM IST = 12:00 AM Singapore on the following day, and 11:45 PM IST = 2:15 AM Singapore on the following day. Historical dates can follow earlier rules recorded in the timezone database; for current scheduling, the displayed modern difference is fixed.
Frequently asked questions
How far ahead is Singapore from IST?
Singapore is 2 hours and 30 minutes ahead of India Standard Time under current rules.
What is 9:00 AM IST in Singapore?
9:00 AM IST is 11:30 AM in Singapore on the same calendar date.
What is 6:00 PM IST in Singapore?
6:00 PM IST is 8:30 PM in Singapore on the same calendar date.
Do India and Singapore use daylight saving time?
No. India and Singapore do not currently change their clocks for daylight saving time, so the modern difference stays fixed.
What does SGT mean?
SGT is a common abbreviation for Singapore Standard Time, which is UTC+08:00.
When does the date change from IST to Singapore?
IST times at or after 9:30 PM convert to the following calendar date in Singapore.
Related converters and official references
Starting with Singapore time? Use the Singapore to IST Converter.
You can also compare the IST to UTC Converter and UTC to IST Converter.
References: Singapore Interpretation Act standard-time provision, CSIR-NPL Indian Standard Time metrology, and the IANA Time Zone Database.