GMT to EST Time Converter
Convert Greenwich Mean Time to Eastern Time instantly.
Scroll the timeline to check any hour of the day.
Greenwich Mean Time
GMT
6:49
Eastern Time
EST
1:49
GMT and EST are on daylight savings right now, shown as BST and EDT.
Search any city, build a custom world clock, and plan across more time zones and options in the FlutterTime app. Free.
How the GMT to EST time difference works
EST is 5 hours behind GMT. Greenwich Mean Time (GMT) is the time zone of the United Kingdom and Ireland. Eastern Time (EST) is the time zone of the US East Coast. For example, 9:00 AM GMT is 4:00 AM EST. Scroll the timeline above to convert any moment, or use the chart below for a quick reference.
Time difference
5 hours
Daylight saving
Both observe
GMT offset
UTC+0
EST offset
UTC-5
GMT to EST conversion chart
| Greenwich Mean Time (GMT) | Eastern Time (EST) |
|---|---|
| 12:00 AM | 7:00 PM -1 day |
| 1:00 AM | 8:00 PM -1 day |
| 2:00 AM | 9:00 PM -1 day |
| 3:00 AM | 10:00 PM -1 day |
| 4:00 AM | 11:00 PM -1 day |
| 5:00 AM | 12:00 AM |
| 6:00 AM | 1:00 AM |
| 7:00 AM | 2:00 AM |
| 8:00 AM | 3:00 AM |
| 9:00 AM | 4:00 AM |
| 10:00 AM | 5:00 AM |
| 11:00 AM | 6:00 AM |
| 12:00 PM | 7:00 AM |
| 1:00 PM | 8:00 AM |
| 2:00 PM | 9:00 AM |
| 3:00 PM | 10:00 AM |
| 4:00 PM | 11:00 AM |
| 5:00 PM | 12:00 PM |
| 6:00 PM | 1:00 PM |
| 7:00 PM | 2:00 PM |
| 8:00 PM | 3:00 PM |
| 9:00 PM | 4:00 PM |
| 10:00 PM | 5:00 PM |
| 11:00 PM | 6:00 PM |
Best time to meet
A standard 9 to 5 workday overlaps from 2:00 PM to 5:00 PM GMT (9:00 AM to 12:00 PM EST). Schedule inside that window to catch both coasts during business hours.
Cities in each time zone
Greenwich Mean Time (GMT)
LondonDublinLisbonEdinburghManchester
Eastern Time (EST)
New YorkWashington D.C.AtlantaMiamiBostonPhiladelphia
GMT to EST questions
Is EST ahead of or behind GMT?
EST is 5 hours behind GMT. So 9:00 AM GMT is 4:00 AM EST, and 5:00 PM GMT is 12:00 PM EST.
What time is EST when it is 12:00 PM GMT?
When it is 12:00 PM (noon) GMT in Greenwich Mean Time, it is 7:00 AM EST in Eastern Time.
How many hours difference is there between GMT and EST?
There is a 5 hours difference. Eastern Time (EST) runs 5 hours behind Greenwich Mean Time (GMT).
Do GMT and EST observe daylight saving time?
Both Greenwich Mean Time and Eastern Time observe daylight saving time, but they switch on different dates, so the gap briefly shifts by an hour around the spring and autumn changeovers.
What is the best time to schedule a meeting between GMT and EST?
A standard 9-to-5 workday overlaps from 2:00 PM to 5:00 PM GMT (9:00 AM to 12:00 PM EST). Scheduling inside that window keeps the call during business hours in both Greenwich Mean Time and Eastern Time.
Which cities use GMT and EST?
Greenwich Mean Time (GMT) covers cities such as London, Dublin, Lisbon, Edinburgh, Manchester. Eastern Time (EST) covers cities such as New York, Washington D.C., Atlanta, Miami, Boston, Philadelphia.