IST to Singapore
+2h 30mIST
ISTSOURCESingapore
SGTGreen rows indicate typical business hours (9 AM - 5 PM)
IST and SGT on the World Map
The map below highlights the IST (India Standard Time) and SGT (Singapore Standard Time) timezone regions across the globe.
IST – India Standard Time
UTC+05:30India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.
- •India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
- •India uses a single time zone despite spanning 30° of longitude.
- •IST is one of only a handful of time zones with a 30-minute offset.
- •IST is the most populous single time zone in the world with over 1.4 billion people.
- •The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.
SGT – Singapore Standard Time
UTC+08:00Singapore Standard Time (SGT) is the time zone for Singapore, 8 hours ahead of UTC.
- •Singapore uses UTC+08:00 despite being at about 104°E longitude (closer to UTC+07:00).
- •Singapore does not observe daylight saving time.
- •The Singapore Exchange (SGX) operates on SGT.
About Singapore
WikipediaSingapore Standard Time (SGT) is 8 hours ahead of GMT. As Asia's leading financial hub, Singapore bridges business hours between Europe and Australia.
The city-state has the world's highest percentage of millionaires, with 1 in 6 households.
IST vs Singapore: Offsets, DST and Best Call Times
IST runs on India Standard Time (IST) at UTC+05:30. Singapore runs on Singapore Standard Time (SGT) at UTC+08:00. That puts IST 2 hours 30 minutes ahead of Singapore — a difference of +2h 30m at the current offsets.
In practice, when it is 9:00 AM in IST it is 11:30 AM in Singapore. Midnight in IST is 2:30 AM in Singapore. Neither zone observes daylight saving time, so the offset between them stays constant all year.
IST to Singapore time conversion table
| IST (IST) | Singapore (SGT) | Day |
|---|---|---|
| 12:00 AM | 2:30 AM | same day |
| 6:00 AM | 8:30 AM | same day |
| 7:00 AM | 9:30 AM | same day |
| 8:00 AM | 10:30 AM | same day |
| 9:00 AM | 11:30 AM | same day |
| 12:00 PM | 2:30 PM | same day |
| 3:00 PM | 5:30 PM | same day |
| 5:00 PM | 7:30 PM | same day |
| 6:00 PM | 8:30 PM | same day |
| 9:00 PM | 11:30 PM | same day |
Why people convert IST to Singapore time
- Scheduling a call from IST to Singapore: a 10:00 AM start in IST lands at 12:30 PM in Singapore, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both IST and Singapore are inside the 9-to-5 working day between 9:00 AM and 2:30 PM IST time (11:30 AM–5:00 PM SGT). That is roughly 5 hours 30 minutes of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in IST is 10:30 PM in Singapore makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a +2h 30m gap is not.
- Block 9:00 AM–2:30 PM IST as the recurring meeting window if you work primarily from IST and need Singapore colleagues present.
About IST (India Standard Time)
India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.
About SGT (Singapore Standard Time)
Singapore Standard Time (SGT) is used in Singapore year-round. Singapore does not observe daylight saving time. Despite being geographically close to the UTC+07:00 zone, Singapore uses UTC+08:00 to align with major trading partners like China, Hong Kong, and Malaysia. Singapore is a major global financial hub.
Best time to call between IST and Singapore
Both IST and Singapore sit inside the 9 AM – 5 PM working day between 9:00 AM–2:30 PM IST, which is 11:30 AM–5:00 PM SGT. That gives roughly 5 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
IST and Singapore share 5 hours of working-hours overlap (9:00 AM–2:30 PM IST), so scheduling a live meeting is straightforward.
IST is 2 hours 30 minutes ahead of Singapore (IST UTC+05:30 → SGT UTC+08:00). The shared working window is 9:00 AM–2:30 PM IST. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between IST and Singapore?
IST (IST, UTC+05:30) is 2 hours 30 minutes ahead of Singapore (SGT, UTC+08:00). The gap is currently +2h 30m.
How do I convert IST time to Singapore time?
Add +2h 30m to IST local time. For example, 9:00 AM in IST is 11:30 AM in Singapore.
What time is it in Singapore right now?
Singapore uses SGT at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +2h 30m offset from IST.
What is the best time to call Singapore from IST?
Call between 9:00 AM and 2:30 PM IST — that maps to 11:30 AM–5:00 PM SGT and keeps both parties inside the working day.
Which is ahead, IST or Singapore?
IST is 2 hours 30 minutes ahead of Singapore. When it is 12:00 PM in IST it is 2:30 PM in Singapore.
Do IST and Singapore use different time zones?
IST uses IST at UTC+05:30, while Singapore (Singapore) uses SGT at UTC+08:00. The IANA identifiers are Asia/Kolkata and Asia/Singapore.
Does daylight saving time affect the IST–Singapore difference?
Neither zone observes daylight saving time, so the +2h 30m offset between IST and Singapore is fixed all year.
Which other cities share IST's time zone?
IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.
Which countries use IST, IST's zone?
IST is used in India, Sri Lanka.
Is there a day difference between IST and Singapore?
Not normally. The +2h 30m gap only pushes the date over for late-evening times.
What is the time difference between IST and Singapore?
Singapore is +2h 30m from IST.
What timezone is IST in?
IST operates on its local timezone.
What timezone is Singapore in?
Singapore Standard Time (SGT) is 8 hours ahead of GMT. As Asia's leading financial hub, Singapore bridges business hours between Europe and Australia.
What are the business hours in Singapore?
Standard business hours in Singapore are 9:00 AM - 6:00 PM SGT.
Which countries use IST (India Standard Time)?
IST is used in India, Sri Lanka.
Does IST observe daylight saving time?
No, IST does not observe daylight saving time and remains at UTC+05:30 year-round.
What are some interesting facts about IST?
India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.
Which cities are in the SGT timezone?
Major cities in the SGT timezone include Singapore.
What is the UTC offset for SGT?
Singapore Standard Time (SGT) is at UTC+08:00.
What should I know about the SGT timezone?
Singapore uses UTC+08:00 despite being at about 104°E longitude (closer to UTC+07:00). Singapore does not observe daylight saving time.
When is it midnight in IST, what time is it in Singapore?
When it is 12:00 AM (midnight) in IST (IST), it is +2h 30m later in Singapore (SGT).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More IST time conversions
- ist to mumbai
- ist to delhi
- ist to bangalore
- ist to india
- ist to new york
- ist to london
- ist to dubai
- ist to tokyo
- ist to sydney
- ist to los angeles
- ist to paris
- ist to berlin
- ist to hong kong
- ist to toronto
- ist to kathmandu
- new york to ist
- london to ist
- dubai to ist
- tokyo to ist
- singapore to ist
- sydney to ist
- los angeles to ist
- paris to ist
- delhi to ist
- mumbai to ist
- berlin to ist
- hong kong to ist
- toronto to ist
- kathmandu to ist
See every conversion from IST →·See every conversion from Singapore →