How do you convert GMT to EST?

Use EST = GMT − 5 hours. For 13:00 GMT that gives 08:00 EST.

What does 13:00 GMT actually mean?

It sits between 10 and 16 GMT; the table on this page shows how those compare.

13:00 GMT to EST

08:00 EST

13:00 Greenwich Mean Time equals 08:00 Eastern Standard Time.

These are standard-time offsets, which never change. What changes is which one a place observes: New York is on EST in winter but EDT (an hour later) during daylight saving, and the UK is on GMT in winter and BST in summer. If you mean "the time in New York right now", use the full converter — it reads live offsets.

How the conversion works

This one is a formula rather than a single multiplier:

EST = GMT − 5 hours → 08:00 EST

Going the other way: 08:00 EST to GMT.

Convert a different time zone

GMT =08:00 EST

Open the full time zone converter for every other unit.

Nearby values

GMT	EST
10:00 GMT	05:00 EST
11:00 GMT	06:00 EST
12:00 GMT	07:00 EST
14:00 GMT	09:00 EST
15:00 GMT	10:00 EST
16:00 GMT	11:00 EST

Questions

What is 13:00 GMT in EST?: 13:00 GMT is 08:00 EST.
How do you convert GMT to EST?: Use EST = GMT − 5 hours. For 13:00 GMT that gives 08:00 EST.
What does 13:00 GMT actually mean?: It sits between 10 and 16 GMT; the table on this page shows how those compare.