GMT to EST Converter
Convert Greenwich Mean Time to US Eastern Standard Time — a 5-hour difference.
GMT to EST Converter
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View on AmazonHow the GMT to EST Converter works
- Enter the time in the source zone.
- Select the source and target time zones.
- Read the converted time, plus whether it falls on the next or previous day.
Formula / logic
Converted time = Input time + (Target zone offset − Source zone offset), adjusted for a possible day change.
Worked example
3:00 PM EST converted to PST: PST is 3 hours behind EST, so the result is 12:00 PM PST.
Frequently asked questions
How many hours behind is EST from GMT?
Eastern Standard Time is 5 hours behind Greenwich Mean Time.
Does this tool adjust for daylight saving time automatically?
It uses standard zone offsets; double-check against the specific date if your event falls near a daylight saving changeover, since some zones shift by an hour part of the year.
What does it mean if the result shows 'next day'?
It means the converted time falls after midnight in the target zone — for example, 11:00 PM EST converted to a zone further east may land in the early hours of the following day.
Is the GMT to EST Converter free to use?
Yes — every calculator on this site is free, with no sign-up or download required.
Does the GMT to EST Converter work on mobile?
Yes, the layout and calculator both adapt to phone and tablet screens.