Our free GMT to EST converter instantly translates Greenwich Mean Time into US Eastern Time, the classic London-to-New York conversion. Whether you are joining a transatlantic call, coordinating a UK product launch with an East Coast team, or reading a GMT-stamped report, this tool shows the exact local time on both sides.
Eastern Time is behind GMT year-round; the gap depends on daylight saving in both regions: (Offsets follow the IANA Time Zone Database.)
GMT is 5 hours ahead of EST during standard time, so 12:00 PM GMT is 7:00 AM EST. Around daylight-saving transitions the gap can briefly be 4 hours because the UK and US change clocks on different dates.
Noon GMT is 7:00 AM in New York during winter (EST). In summer, London is on BST and New York on EDT, and the same wall-clock noon in London is also 7:00 AM in New York.
Yes, for conversion purposes — GMT and UTC share a zero offset, so both put noon at 7:00 AM EST. UTC is the precise standard used in computing; GMT is the UK term.
EST is 5 hours behind GMT year-round. 100% free, no registration, and fully private — every conversion happens in your browser.
Uses the IANA database for Europe/London and America/New_York, so daylight saving is applied automatically — no manual offset math.
Convert GMT to EST the moment you pick a time. No signup, no ads in your way, nothing to install.
Find the London ↔ New York overlap fast — both cities are in business hours roughly 2:00 PM–5:00 PM GMT.
Every conversion runs locally in your browser using your device clock. Your dates and times never touch a server.
Reverse conversion
From Greenwich Mean Time
From Greenwich Mean Time
From Greenwich Mean Time
From Greenwich Mean Time
From Greenwich Mean Time
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