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Timezone conversion

GMT to EST Converter (2026)

EST (US Eastern Standard Time) is 5 hours behind GMT (Greenwich Mean Time). When it's 3:00 PM GMT in London, it's 10:00 AM EST in New York. Because both regions observe daylight saving on nearly the same schedule, the practical London ↔ New York gap is 5 hours for most of the year.

Last updated June 25, 2026 · Maintained by Clockjumper

Quick answer

EST is 5h behind GMT. Subtract 5 hours from GMT to get EST. The best window for a live UK → US East Coast call is 1:00 – 5:00 PM GMT (8:00 AM – 12:00 PM EST) — the last four hours of the UK workday overlap the first four of the New York workday.

EST is currently 5h behind GMT.

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

London (UK) • BST (UTC+1)
4:34 AM
Friday, Jul 3
New York (US East Coast) • EDT (UTC-4)
11:34 PM
Thursday, Jul 2

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

Interactive converter

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Key conversion times

  • 9:00 AM GMT4:00 AM EST
    Start of the UK workday — middle of the US night, no live overlap
  • 12:00 PM GMT7:00 AM EST
    London noon — pre-work in the US, occasional early-bird call
  • 1:00 PM GMT8:00 AM EST
    London early afternoon — start of the US workday, prime overlap
  • 3:00 PM GMT10:00 AM EST
    London mid-afternoon — US mid-morning, best call slot
  • 5:00 PM GMT12:00 PM EST
    End of the UK workday — New York noon

Full GMT to EST conversion table

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

Daylight saving and how the gap changes

GMT is fixed UTC+0. UK civil time observes BST (UTC+1) from late March to late October. The US switches to EDT (UTC-4) from the second Sunday of March to the first Sunday of November. Because both regions observe DST, the London ↔ New York gap stays 5 hours for most of the year — with brief 4-hour windows in mid-March (US on EDT while UK still on GMT) and early November (UK back on GMT while US still on EDT).

Frequently asked questions

What is the time difference between GMT and EST?
EST (US Eastern Standard Time, UTC-5) is 5 hours behind GMT (Greenwich Mean Time, UTC+0). When it's 3:00 PM GMT in London, it's 10:00 AM EST in New York.
What time is 3 PM GMT in EST?
3:00 PM GMT is 10:00 AM EST the same day.
What time is 9 AM GMT in EST?
9:00 AM GMT is 4:00 AM EST the same day — the middle of the US night.
Does daylight saving affect the London ↔ New York gap?
The gap is 5 hours most of the year because both regions observe DST at nearly the same time. It briefly becomes 4 hours in mid-March (US on EDT before the UK moves) and again in early November (UK back on GMT before the US moves).
When is the best time to schedule a UK → US East Coast call?
1:00 – 5:00 PM GMT (8:00 AM – 12:00 PM EST) is the widest overlap inside both sides' 9-to-5 workday.

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