GMT to EST Time Converter
Eastern Standard Time (EST) is currently 5 hours behind Greenwich Mean Time (GMT). GMT is UTC+0 and EST is UTC-5. The table below converts every hour of the day between the two, and the call planner shows where working hours line up.
Best Time for a Call
Both sides are inside 9:00 AM to 5:00 PM office hours between 2:00 PM and 5:00 PM in GMT, which is 9:00 AM to 12:00 PM in EST.
Comparing more than two places? The Overlap Zones tool shows working hours for several cities on one grid.
Hour by Hour: GMT to EST
Rows marked office hours fall between 9:00 AM and 5:00 PM in both places. For a specific date, use the interactive converter.
Does the Difference Change During the Year?
GMT and EST are fixed offsets, so the difference between them never changes.
GMT is UTC+0 and never shifts. The UK is on GMT in winter but moves to BST (UTC+1) from late March to late October.
EST is UTC-5, used across eastern North America in winter. The same region switches to EDT (UTC-4) from March to November.
Frequently Asked Questions
How many hours behind is EST compared to GMT?
EST is currently 5 hours behind GMT. GMT and EST are fixed offsets, so the difference between them never changes.
What time is 9:00 AM in GMT in EST?
9:00 AM in GMT is 4:00 AM in EST.
What is the best time for a call between GMT and EST?
Both sides are inside 9:00 AM to 5:00 PM office hours between 2:00 PM and 5:00 PM in GMT, which is 9:00 AM to 12:00 PM in EST.