GMT to EST — Time Zone Converter
Greenwich Mean Time (GMT, UTC+0) covers the United Kingdom; Eastern Time (EST, UTC−5) covers the US East Coast. In standard time, EST is 5 hours behind GMT. Mornings in the US East Coast overlap with afternoons in the United Kingdom, which keeps both sides inside office hours. Use the live converter below — it applies today's IANA time zone data, including daylight saving time, and gives you a meeting schedule you can paste straight into email or Slack.
GMT to EST, hour by hour (today)
Frequently asked questions
What is the time difference between GMT and EST?+
Greenwich Mean Time (GMT) is UTC+0 and Eastern Time (EST) is UTC−5, so in standard time EST is 5 hours behind GMT. The gap shifts by an hour around daylight saving transitions, so always check a live converter near the change dates in spring and autumn.
Does GMT or EST observe daylight saving time?+
Greenwich Mean Time observes daylight saving time (GMT in winter, BST in summer). Eastern Time observes daylight saving time (EST in winter, EDT in summer).
What is the best time for a meeting between GMT and EST?+
Mornings in the US East Coast overlap with afternoons in the United Kingdom, which keeps both sides inside office hours. The converter above highlights office hours in green for both zones, so you can slide to a time that works for everyone.
How do I share a GMT to EST meeting time by email?+
Pick a time in the converter, log it to the Smart Clipboard, and copy it as bullets, a formatted table, or a one-line question — with both GMT and EST times spelled out so nobody has to do the math.