IST to GMT Time Converter - Live World Clock

Convert time between India Standard Time (IST) and Greenwich Mean Time (GMT). See current time with live clocks.

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India (IST)

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11:51:40 PM
Sunday, February 1, 2026

United Kingdom (GMT)

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06:21:40 PM
Sunday, February 1, 2026

Current Time Difference

IST is 5.5 hours ahead of GMT

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What is IST (India Standard Time)?

India Standard Time (IST) is the time zone observed throughout India, with a time offset of UTC+5:30. India does not observe Daylight Saving Time.

Countries and Regions Using IST

Primary Country:

  • India - The entire country follows IST

Also Used By:

  • Sri Lanka

Key Facts about IST:

  • ✓ Over 1.4 billion people use IST
  • ✓ Major tech and financial hub
  • ✓ No DST observed
  • ✓ Single timezone across the country
  • ✓ Major Cities: Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad
  • ✓ UTC Offset: +5:30

What is GMT (Greenwich Mean Time)?

Greenwich Mean Time (GMT) is the reference point for world time zones, UTC+0:00.

Countries and Regions Using GMT

Primary Country:

  • United Kingdom

Also Used By:

  • Ireland
  • Portugal

Key Facts about GMT:

  • ✓ Prime meridian reference point
  • ✓ London financial center
  • ✓ Historical timekeeping standard
  • ✓ Major Cities: London, Manchester, Birmingham, Leeds, Glasgow
  • ✓ UTC Offset: +0:00 (+1:00 during BST)

IST to GMT Time Difference

Standard Time Difference:

IST is 5.5 hours ahead

Common Use Cases:

  • • Business meetings between India and United Kingdom
  • • International collaboration across timezones
  • • Scheduling calls and conferences

Frequently Asked Questions

Which countries are in IST time zone?

India is the primary country using IST (+5:30). Other countries include: Sri Lanka.

Which countries are in GMT time zone?

United Kingdom is the primary country using GMT (+0:00). Other countries include: Ireland, Portugal.

How many hours is IST ahead of GMT?

IST is 5.5 hours ahead of GMT.

Does India observe Daylight Saving Time?

No, India does not observe Daylight Saving Time. IST remains +5:30 throughout the year.

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