EST to GMT Time Zone Converter
This converts US Eastern Time — the clock New York and the East Coast keep — into London time. For most of the year London runs 5 hours ahead of the East Coast. Both places observe daylight saving, so the gap holds steady most of the time; the converter handles the odd couple of weeks when they don't line up.
Enter a date and time to convert.
Daylight saving is applied automatically for the date you pick. Labels like PST/EST name the zone (Pacific/Eastern); the real abbreviation shifts to PDT/EDT during daylight saving, and gmt here means London (GMT in winter, BST in summer) while utc stays fixed.
The time difference
London is 5 hours ahead of US Eastern Time for most of the year. Both the East Coast and the UK observe daylight saving, so they move together and the gap stays put. The catch is that they switch on different dates — the US in early March and November, the UK in late March and late October — so for a short stretch each spring and fall the gap slips to 4 or 6 hours until both sides have caught up.
A worked example
Take 9:00 AM in New York. On January 15, 2026 that's 2:00 PM in London. On July 15, 2026 it's also 2:00 PM in London — the clock result is the same in both seasons, because both dates fall in periods where the US and UK are aligned.
Daylight saving & the abbreviation caveat
The slug says GMT, London's winter name, but from late March to late October London runs on BST, an hour ahead of GMT. On the US side, EST is the winter label; the East Coast moves to EDT in summer, and locals just say "ET." Because the US switches on March 8 and the UK on March 29 (and back on November 1 versus October 25 in 2026), the usual 5-hour gap is off by an hour during those brief windows. The converter tracks all of it for the exact date you pick.
When you'll use it
Useful for scheduling a call with a London office, catching a Premier League kickoff, timing a UK market open, or booking a transatlantic flight where the arrival time is quoted in local London time.
Frequently asked questions
How many hours ahead is London than New York?
Usually 5 hours. When it's 9:00 AM on the East Coast, it's 2:00 PM in London most of the year, because the two places shift their clocks in roughly the same rhythm.
Does the 5-hour gap ever change?
Briefly, yes. The US and the UK switch clocks on different dates, so for about two weeks in late March and late October the gap is off by an hour. Outside those windows it's a steady 5 hours.
Is GMT the same as London time?
In winter, yes. In summer London moves to BST — British Summer Time — which is an hour ahead of GMT. Either way the converter uses whatever London is actually on for your date.