India Standard Time (ist) is used in India. The IANA timezone identifier is Asia/Kolkata.

Singapore Time (sgt) is used in Singapore. The IANA timezone identifier is Asia/Singapore.

IST to SGT Time Converter

India Standard Time → Singapore Time

IST = UTC+5:30SGT = UTC+8

⚠️ IST is ambiguous — on this page it means India Standard Time. It also refers to:

Ireland Standard Time (Dublin) → SGT ↗Israel Standard Time (Jerusalem) → SGT ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

SGT (Singapore)

Singapore · +2.5h

11:30

London

United Kingdom · -4.5h

04:30

New York

USA · -9.5h

23:30-1 day

Tokyo

Japan · +3.5h

12:30

Dubai

United Arab Emirates · -1.5h

07:30

IST (Mumbai) ↔ SGT (Singapore) — time offset

IST (Mumbai) is 3 hours 30 minutes behind SGT (Singapore). When IST (Mumbai) clocks hit noon, SGT (Singapore) reads 14:00.

IST (Mumbai) runs on Asia/Kolkata; SGT (Singapore) runs on Asia/Singapore. Together they are 2.5 hours 30 minutes apart.

Mutual working hours

Every working day, IST (Mumbai) and SGT (Singapore) are both in business hours for 5.5 hours simultaneously.

00:0006:0012:0018:0024:00

IST (Mumbai)

SGT (Singapore)

Overlap (5.5h)

Best times to schedule a meeting

There is a 5.5-hour daily window where both locations are in business hours. The 3 best slots are listed below.

09:00 Mumbai / 11:00 Singapore✓ Both working

10:00 Mumbai / 12:00 Singapore✓ Both working

11:00 Mumbai / 13:00 Singapore✓ Both working

Working hours defined as 09:00–17:00 local time for each location.

Holiday calendar for both locations

IST (Mumbai)

No upcoming public holidays this year.

SGT (Singapore)3 holidays

Aug 10National Day

Nov 9Deepavali

Dec 25Christmas Day

Working across IST (Mumbai) and SGT (Singapore)

The 2.5-hour gap between IST (Mumbai) (India) and SGT (Singapore) (Singapore) requires some planning — but a 5.5-hour daily overlap means both teams can connect in real time without unusual scheduling.

💡 Best practice for cross-timezone meetings

✅

If you are in IST (Mumbai), aim for 09:00–10:00, which corresponds to 11:00–12:00 in SGT (Singapore) — both teams are within working hours.

✅

If you are in IST (Mumbai), aim for 10:00–11:00, which corresponds to 12:00–13:00 in SGT (Singapore) — both teams are within working hours.

✅

If you are in IST (Mumbai), aim for 11:00–12:00, which corresponds to 13:00–14:00 in SGT (Singapore) — both teams are within working hours.

Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.

Add to your browser — Free →

Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am IST (Mumbai)".

IST (Mumbai) ↔ SGT (Singapore)

6h of business hours overlap daily (09:00–17:00)

IST (Mumbai)

SGT (Singapore)

00:00

02:30

01:00

03:30

02:00

04:30

03:00

05:30

04:00

06:30

05:00

07:30

06:00

08:30

07:00

09:30Working

08:00

10:30Working

09:00Working

11:30Working

10:00Working

12:30Working

11:00Working

13:30Working

12:00Working

14:30Working

13:00Working

15:30Working

14:00Working

16:30Working

15:00Working

17:30off

16:00Working

18:30off

17:00

19:30

18:00

20:30

19:00

21:30

20:00

22:30

21:00

23:30

22:00

00:30+1d

23:00

01:30+1d

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between ist and sgt?

India Standard Time (ist) is UTC+5:30 and Singapore Time (sgt) is UTC+8. The difference between them is 2.5 hours.

Where is ist used?

India Standard Time (ist) is used in India and surrounding regions. The IANA timezone identifier is Asia/Kolkata. Note: ist is ambiguous and may refer to other timezones.

Where is sgt used?

Singapore Time (sgt) is used in Singapore and surrounding regions. The IANA timezone identifier is Asia/Singapore.

How do I convert ist to sgt?

Use the interactive converter above. Drag the time slider to any ist time and the sgt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular IST conversions

IST → London IST → New York IST → Tokyo IST → Dubai IST → Sydney IST → Paris IST → Berlin IST → Singapore IST → Los Angeles IST → Toronto

Popular SGT conversions

London → SGT New York → SGT Tokyo → SGT Dubai → SGT Sydney → SGT Paris → SGT Berlin → SGT Los Angeles → SGT Toronto → SGT Mumbai → SGT