EST to GMT Time Converter - Live World Clock

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

United States (EST)

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01:27:44 PM
Thursday, August 20, 2026

United Kingdom (GMT)

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06:27:44 PM
Thursday, August 20, 2026

Current Time Difference

EST is -5 hours behind GMT

(-5 hours during Daylight Saving Time)

What is EST (Eastern Standard Time)?

Eastern Standard Time (EST) is used in eastern North America and the Caribbean, UTC-5:00.

Countries and Regions Using EST

Primary Country:

  • United States
  • States: New York, Florida, Pennsylvania, Georgia, Michigan

Also Used By:

  • Canada - Ontario, Quebec

Key Facts about EST:

  • ✓ Most populous US timezone
  • ✓ Wall Street financial center
  • ✓ DST observed March-November
  • ✓ Major Cities: New York City, Miami, Atlanta, Boston, Philadelphia, Washington D.C.
  • ✓ UTC Offset: -5:00 (-4:00 during EDT)

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)

EST to GMT Time Difference

Standard Time Difference:

EST is -5 hours behind

During Daylight Saving Time:

EST is -5 hours behind

Common Use Cases:

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

Frequently Asked Questions

Which countries are in EST time zone?

United States is the primary country using EST (-5:00). Other countries include: Canada.

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 EST ahead of GMT?

EST is -5 hours behind GMT. During Daylight Saving Time, the difference is -5 hours.

Does United States observe Daylight Saving Time?

Yes, United States observes Daylight Saving Time. During DST, EST changes to EDT (Eastern Daylight Time) with UTC offset of -4:00.