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EST to GMT Time

Instantly convert Eastern Standard Time (EST) to Greenwich Mean Time (GMT) to schedule international meetings, coordinate with global teams, and manage cross-time-zone deadlines accurately.

  • Free
  • Instant results
  • Runs in your browser
In short

GMT (UTC+0) is 5 hours ahead of EST (UTC−5) in standard time. 10:00 AM EST is 3:00 PM GMT. During daylight saving time (roughly March to early November) the gap is 4 hours, so 10:00 AM EDT is 2:00 PM GMT.

About EST to GMT Time

EST covers New York, Toronto, Atlanta, Miami and Boston. GMT covers Reykjavik and Accra, and the reference for every other zone.

Working days overlap between 09:00 and 14:00 EST, which is 13:00–18:00 in GMT. That window is where calls land without anyone working late.

The clocks do not change on the same day, so a recurring meeting can shift by an hour in March and again in November. Check any standing call in the two weeks after each change.

How it works

GMT / UTC is 5 hours ahead of Eastern Time (New York) between November and March, and 4 hours ahead the rest of the year.

  1. Take the EST time you want to convert.
  2. Add 5 hours between autumn and spring, or 4 hours during daylight saving.
  3. Roll the date forward or back if the result crosses midnight.

The gap changes because the two places start and end daylight saving on different dates — for a few weeks each spring and autumn the difference is an hour off its usual value. The converter above uses the live IANA time zone database, so it is right on those days too.

Zone details: EST is −5 in winter and −4 in summer (UTC), GMT is +0 all year.

Examples

A working day in EST, seen from GMT (during daylight saving):

EST to GMT at a glance
ESTGMT
09:00 EST13:00 GMT
12:00 EST16:00 GMT
15:00 EST19:00 GMT
18:00 EST22:00 GMT
21:00 EST01:00 GMT (next day)

Meetings usually work best where the two working days overlap. Drag the timeline above to see the overlap for any hour, or use the full time zone converter for any other pair of cities.

EST to GMT Time: frequently asked questions

What is the time difference between EST and GMT?
GMT is 5 hours ahead of EST in standard time (EST is UTC−5, GMT is UTC+0). The gap can change by an hour for part of the year because EST observes daylight saving (EDT) and GMT does not observe daylight saving.
What is 9 AM EST in GMT?
9:00 AM EST is 2:00 PM GMT (standard time).
Where is EST used?
Eastern Standard Time (UTC−5) is used in the US East Coast (New York, Miami).
Where is GMT used?
Greenwich Mean Time (always UTC+0; the UK switches to BST in summer) (UTC+0) is used in the UK in winter, Iceland and parts of West Africa.