Clockjumper

Timezone conversion

EST to GMT Converter (2026)

GMT (Greenwich Mean Time) is 5 hours ahead of EST (US Eastern Standard Time). When it's 9:00 AM EST in New York, it's 2:00 PM GMT in London. Both regions observe daylight saving, so the practical New York ↔ London gap is 5 hours for most of the year — briefly widening to 6 hours between the UK's autumn switch and the US's autumn switch.

Last updated June 25, 2026 · Maintained by Clockjumper

Quick answer

GMT is 5h ahead of EST. Add 5 hours to EST to get GMT. The best window for a live NYC ↔ London call is 8:00 AM – 12:00 PM EST (1:00 – 5:00 PM GMT). During UK British Summer Time (late March to late October), London runs on BST rather than GMT — the New York ↔ London gap stays 5 hours because the US is on EDT at the same time.

GMT is currently 5h ahead of EST.

Right now New York (US East Coast) is on EDT (UTC-4) and London (UK) on BST (UTC+1). This flips back to the standard EST/GMT gap once daylight saving ends.

New York (US East Coast) • EDT (UTC-4)
11:35 PM
Thursday, Jul 2
London (UK) • BST (UTC+1)
4:35 AM
Friday, Jul 3

Live clocks above use each region's current local time (DST-aware). The reference table below uses the fixed EST → GMT standard offset — see the DST section for how the gap changes across the year.

Interactive converter

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Key conversion times

  • 7:00 AM EST12:00 PM GMT
    Pre-workday in New York — London noon, last easy live window into the UK
  • 8:00 AM EST1:00 PM GMT
    Start of the US workday — early afternoon in London, prime overlap
  • 10:00 AM EST3:00 PM GMT
    US mid-morning — UK mid-afternoon, best call slot
  • 12:00 PM EST5:00 PM GMT
    New York noon — end of the UK workday
  • 2:00 PM EST7:00 PM GMT
    US early afternoon — UK evening, past working hours in London

Full EST to GMT conversion table

EST (New York)GMT (London)
12:00 AM5:00 AM
1:00 AM6:00 AM
2:00 AM7:00 AM
3:00 AM8:00 AM
4:00 AM9:00 AM
5:00 AM10:00 AM
6:00 AM11:00 AM
7:00 AM12:00 PM
8:00 AM1:00 PM
9:00 AM2:00 PM
10:00 AM3:00 PM
11:00 AM4:00 PM
12:00 PM5:00 PM
1:00 PM6:00 PM
2:00 PM7:00 PM
3:00 PM8:00 PM
4:00 PM9:00 PM
5:00 PM10:00 PM
6:00 PM11:00 PM
7:00 PM12:00 AM(next day)
8:00 PM1:00 AM(next day)
9:00 PM2:00 AM(next day)
10:00 PM3:00 AM(next day)
11:00 PM4:00 AM(next day)

Daylight saving and how the gap changes

GMT itself is UTC+0 and never changes. But UK civil time is on BST (UTC+1) from the last Sunday of March to the last Sunday of October. The US Eastern zone runs on EDT (UTC-4) from the second Sunday of March to the first Sunday of November. Because both regions observe DST, the New York ↔ London gap is 5 hours for most of the year. There is a ~1-week window in November when the UK has already fallen back to GMT but the US is still on EDT — during that week the gap is 4 hours. And ~1 week in March when the US has sprung forward but the UK hasn't — during that week the gap is also 4 hours.

Frequently asked questions

What is the time difference between EST and GMT?
GMT (Greenwich Mean Time, UTC+0) is 5 hours ahead of EST (US Eastern Standard Time, UTC-5). When it's 9:00 AM EST in New York, it's 2:00 PM GMT in London.
What time is 9 AM EST in GMT?
9:00 AM EST is 2:00 PM GMT the same day.
What time is 5 PM EST in GMT?
5:00 PM EST is 10:00 PM GMT the same day.
Is UK time always GMT?
No. GMT is fixed UTC+0, but UK civil time observes British Summer Time (BST, UTC+1) from late March to late October. The New York ↔ London gap still holds at 5 hours through most of the year because the US is on EDT during the same period.
When is the best time to schedule a New York → London call?
8:00 AM – 12:00 PM EST (1:00 – 5:00 PM GMT / BST) — the first four hours of the US workday overlap the last four of the UK workday. This is the widest live window between the two cities.

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