MeetingTimePro

GMT to EST converter

Greenwich Mean Time to Eastern Time. EST is 5 h behind of GMT in January and 4 h behind in July.

From

GMT · GMT UTC · UTC+0

  • EST · New YorkEDT · UTC−4 · 4 h behind
    05:00Mon, Sep 28
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The gap between GMT and EST

2026GMT clocksEST clocksDifference
JanuaryUTC UTC+0EST UTC−55 h behind
JulyUTC UTC+0EDT UTC−44 h behind

The gap changes on: Sun, March 8, 2026 (4 h behind); Sun, November 1, 2026 (5 h behind); Sun, March 14, 2027 (4 h behind); Sun, November 7, 2027 (5 h behind).

Convert the other way: EST to GMT · Plan a meeting across more places

GMT to EST time table

Every hour of the GMT day and the matching EST time, for a mid-January and a mid-July date.

GMTEST · JanuaryEST · July
12:00 AM7:00 PM (−1 day)8:00 PM (−1 day)
1:00 AM8:00 PM (−1 day)9:00 PM (−1 day)
2:00 AM9:00 PM (−1 day)10:00 PM (−1 day)
3:00 AM10:00 PM (−1 day)11:00 PM (−1 day)
4:00 AM11:00 PM (−1 day)12:00 AM
5:00 AM12:00 AM1:00 AM
6:00 AM1:00 AM2:00 AM
7:00 AM2:00 AM3:00 AM
8:00 AM3:00 AM4:00 AM
9:00 AM4:00 AM5:00 AM
10:00 AM5:00 AM6:00 AM
11:00 AM6:00 AM7:00 AM
12:00 PM7:00 AM8:00 AM
1:00 PM8:00 AM9:00 AM
2:00 PM9:00 AM10:00 AM
3:00 PM10:00 AM11:00 AM
4:00 PM11:00 AM12:00 PM
5:00 PM12:00 PM1:00 PM
6:00 PM1:00 PM2:00 PM
7:00 PM2:00 PM3:00 PM
8:00 PM3:00 PM4:00 PM
9:00 PM4:00 PM5:00 PM
10:00 PM5:00 PM6:00 PM
11:00 PM6:00 PM7:00 PM

About these two clocks

GMT — Greenwich Mean Time. Used in UTC+0; the UK uses it in winter only. GMT itself never shifts. The UK leaves GMT for BST (UTC+1) from late March to late October, so “London time” and GMT differ in summer.

EST — Eastern Time. Used in New York, Toronto, Miami, Atlanta. Strictly, EST is the winter name; from March to November the same clocks show EDT (UTC−4). This page follows the clocks, so summer dates use EDT.

All figures on this page come from the IANA time zone database (the same data your phone and laptop use), evaluated for the date in question. Abbreviations are ambiguous — “IST” also means Irish or Israel Standard Time, and “CST” is China Standard Time in Asia — so this page uses Etc/GMT and America/New_York explicitly.

Questions people ask

How many hours ahead or behind is EST compared with GMT?

EST is 5 h behind of GMT in January and 4 h behind in July. The gap moves because daylight saving time starts and ends on different dates (or not at all) in the two places.

What is 9 am GMT in EST?

On a January date, 9:00 am GMT is 4:00 AM EST. In July it is 5:00 AM. Use the converter above for any other date.

Which cities use GMT?

Greenwich Mean Time (GMT) is used in UTC+0; the UK uses it in winter only. GMT itself never shifts. The UK leaves GMT for BST (UTC+1) from late March to late October, so “London time” and GMT differ in summer.

Which cities use EST?

Eastern Time (EST) is used in New York, Toronto, Miami, Atlanta. Strictly, EST is the winter name; from March to November the same clocks show EDT (UTC−4). This page follows the clocks, so summer dates use EDT.

When is a good time for a GMT–EST call?

Look for the hours where both columns in the table fall between about 8 am and 6 pm. If none exist, the meeting planner on our home page shows the least-bad options and lets you share a link that converts for every attendee.

Related conversions

UTC to ESTPST to ESTCST to ESTIST to ESTGMT to ISTMST to ESTCET to ESTBST to ESTGMT to PSTJST to EST