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GMT to Eastern Time Converter
Convert GMT and UK time to US Eastern Time and back, with the 4 or 5 hour difference adjusted for daylight saving.
Quick answer
Eastern Time is 5 hours behind GMT in winter (EST, UTC−5) and 4 hours behind in summer (EDT, UTC−4). 12:00 GMT is 7:00 AM EST in January and 8:00 AM EDT in July. The UK switches to BST in summer, so London stays 5 hours ahead of New York most of the year.
Choose a time and date to convert.
Step by step
How to use the GMT to Eastern Time Converter
01
Enter a time in UK time (GMT/BST).
02
See the same moment in Eastern Time.
03
Swap to convert Eastern to UK time.
Worked examples
GMT (UTC) to Eastern Time
| GMT / UTC | Eastern, winter (EST) | Eastern, summer (EDT) |
|---|---|---|
| 0000 (12:00 AM) | 7:00 PM | 8:00 PM |
| 0300 (3:00 AM) | 10:00 PM | 11:00 PM |
| 0600 (6:00 AM) | 1:00 AM | 2:00 AM |
| 0900 (9:00 AM) | 4:00 AM | 5:00 AM |
| 1200 (12:00 PM) | 7:00 AM | 8:00 AM |
| 1400 (2:00 PM) | 9:00 AM | 10:00 AM |
| 1500 (3:00 PM) | 10:00 AM | 11:00 AM |
| 1700 (5:00 PM) | 12:00 PM | 1:00 PM |
| 1800 (6:00 PM) | 1:00 PM | 2:00 PM |
| 2100 (9:00 PM) | 4:00 PM | 5:00 PM |
Good to know
GMT, UTC and UK time
GMT and UTC show the same time for everyday purposes. The UK uses GMT in winter and British Summer Time (BST, UTC+1) from the last Sunday in March to the last Sunday in October. A meeting at “2 PM London time” in July is 2 PM BST, which is 9 AM in New York.
The weeks when the gap is 4 hours
The US moves its clocks forward in mid-March and back in early November, while the UK changes at the end of March and the end of October. For a few weeks each spring and autumn, London and New York are only 4 hours apart. The converter uses the real rules for the date you choose, so these weeks are handled automatically.
FAQ
Frequently asked questions
What is 15:00 GMT in EST?
10:00 AM EST in winter, or 11:00 AM EDT in summer.
Is GMT the same as UTC?
For converting times, yes. UTC is the precise scientific standard.
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