How do you convert EST to UTC?

Use UTC = EST + 5 hours. For 10:00 EST that gives 15:00 UTC.

What does 10:00 EST actually mean?

It sits between 7 and 13 EST; the table on this page shows how those compare.

10:00 EST to UTC

15:00 UTC

10:00 Eastern Standard Time equals 15:00 Coordinated Universal 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:

UTC = EST + 5 hours → 15:00 UTC

Going the other way: 15:00 UTC to EST.

Convert a different time zone

EST =15:00 UTC

Open the full time zone converter for every other unit.

Nearby values

EST	UTC
07:00 EST	12:00 UTC
08:00 EST	13:00 UTC
09:00 EST	14:00 UTC
11:00 EST	16:00 UTC
12:00 EST	17:00 UTC
13:00 EST	18:00 UTC

Questions

What is 10:00 EST in UTC?: 10:00 EST is 15:00 UTC.
How do you convert EST to UTC?: Use UTC = EST + 5 hours. For 10:00 EST that gives 15:00 UTC.
What does 10:00 EST actually mean?: It sits between 7 and 13 EST; the table on this page shows how those compare.