EST to GMT Converter
Convert Eastern Standard Time (EST/EDT) to Greenwich Mean Time (GMT) instantly. See live clocks, convert any time, and view a full hour-by-hour comparison chart — free, no signup required.
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EST to GMT — Hour-by-Hour Comparison
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Frequently Asked Questions
EST (Eastern Standard Time) is 5 hours behind GMT (Greenwich Mean Time). This means when it is noon in New York (EST), it is 5:00 PM in London (GMT). During daylight saving time (EDT, March–November), Eastern Time is only 4 hours behind GMT.
To convert EST to GMT, simply add 5 hours. For example: 10:00 AM EST = 3:00 PM GMT. During daylight saving time (EDT), add only 4 hours: 10:00 AM EDT = 2:00 PM GMT.
Yes. GMT does not observe daylight saving time, but the Eastern time zone does. During standard time (EST, November–March), the offset is 5 hours. During daylight saving time (EDT, March–November), the offset is 4 hours. Additionally, the UK observes BST (British Summer Time, GMT+1) from late March to late October, which can further affect the practical difference.
EST cities: New York, Washington D.C., Miami, Atlanta, Boston.
GMT cities: London, Dublin, Lisbon, Accra, Reykjavik.