What is the difference between UTC and EST?

EST is 5 hours behind of UTC. UTC means Coordinated Universal Time at UTC+0, and EST means Eastern Standard Time at UTC-5.

Which time zone does this page use for UTC?

UTC. An abbreviation is not a time zone — it is a label a zone wears for part of the year — so every calculation here uses a named IANA zone and says which one. If you are writing code, use UTC rather than the string "UTC".

Does EST mean anything else?

Yes: Eastern Standard Time (Australia) at UTC+10. Australia used "EST" for its eastern states until the AEST/AEDT forms took over. Older documents still use the bare form.

Is UTC a daylight saving abbreviation?

No. UTC is the standard-time abbreviation. When daylight saving is in force, the same zone uses a different one.

UTC to EST

The gap between UTC and EST is 5 hours behind — UTC+0 against UTC-5.

Convert a time

From

Date

Time

Converted time

—

The converter needs JavaScript to run. Everything below — offsets, daylight saving dates and the hour-by-hour table — is part of the page and works without it.

Hour by hour

Computed on a date when UTC is genuinely in force — using today would be wrong for half the year, because a standard-time abbreviation does not exist in summer.

UTC	EST
00:00	19:00previous day
01:00	20:00previous day
02:00	21:00previous day
03:00	22:00previous day
04:00	23:00previous day
05:00	00:00
06:00	01:00
07:00	02:00
08:00	03:00
09:00	04:00
10:00	05:00
11:00	06:00
12:00	07:00
13:00	08:00
14:00	09:00
15:00	10:00
16:00	11:00
17:00	12:00
18:00	13:00
19:00	14:00
20:00	15:00
21:00	16:00
22:00	17:00
23:00	18:00

What these abbreviations actually are

	UTC	EST
Full name	Coordinated Universal Time	Eastern Standard Time
Representative zone	UTC	America/New_York
Offset	UTC+0	UTC-5
Seasonal	Standard time	Standard time
Zone changes in 2026	0	2
Other meanings	None in common use	1

Common questions

What is the difference between UTC and EST?: EST is 5 hours behind of UTC. UTC means Coordinated Universal Time at UTC+0, and EST means Eastern Standard Time at UTC-5.
Which time zone does this page use for UTC?: UTC. An abbreviation is not a time zone — it is a label a zone wears for part of the year — so every calculation here uses a named IANA zone and says which one. If you are writing code, use UTC rather than the string "UTC".
Does EST mean anything else?: Yes: Eastern Standard Time (Australia) at UTC+10. Australia used "EST" for its eastern states until the AEST/AEDT forms took over. Older documents still use the bare form.
Is UTC a daylight saving abbreviation?: No. UTC is the standard-time abbreviation. When daylight saving is in force, the same zone uses a different one.