Unix (s):1782526197
Unix (ms):1782526197703
ISO 8601:2026-06-27T02:09:57.703Z
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Unix Timestamp Converter

Paste anything
✓ detected: unix timestamp (seconds)

Standard formats

unix timestamp (seconds)
1609459200
unix timestamp (milliseconds)
1609459200000
iso 8601 (utc)
2021-01-01T00:00:00.000Z
iso 8601 (local, no Z)
2021-01-01T00:00:00
rfc 2822 (email/http)
Fri, 01 Jan 2021 00:00:00 +0000
human readable
Friday, 1 January 2021, 00:00:00 UTC

Timezones

UTC
01 Jan 2021, 00:00:00
UTC
01 Jan 2021, 00:00:00
—

Platform-specific formats

windows filetime
132539328000000000
apple cocoa time
631152000
excel serial date
44197.00000
ntp timestamp
3818448000
gps timestamp
Week 2138, ToW 432000s
.net datetime ticks
637450560000000000
webkit timestamp
13253932800000000
tai timestamp
1609459237
(UTC +37s, as of 2017)
julian date
2459215.50000
modified julian date (mjd)
59215.00000
lilian date
160055
unix day
18628

ABOUT THIS TIMESTAMP

Unix timestamp 1609459200 represents Friday, 1 January 2021 at 00:00:00 UTC. In milliseconds it is 1609459200000. This moment falls on day 1 of 2021, in week 1. The ISO 8601 representation is 2021-01-01T00:00:00.000Z. The Windows FILETIME equivalent is 132539328000000000. The Apple Cocoa timestamp is 631152000. The Excel serial date is 44197.00000. The NTP timestamp is 3818448000. The Modified Julian Date is 59215.00000. The Unix Day number is 18628.

DAY OF WEEK
Friday
DAY OF YEAR
1 of 365
WEEK NUMBER
Week 1
UNIX DAY
18628
LEAP YEAR
No
DAYS FROM TODAY
2003 days ago
UTC OFFSET FROM NOW
-2003 days

Specialist tools

ABOUT TIMESTAMP CONVERSION

What is a Unix timestamp?

A Unix timestamp is the number of seconds elapsed since 1 January 1970 00:00:00 UTC -- a moment known as the Unix epoch. It is the most universal way computers store and transmit time because it is a timezone-agnostic integer that requires no calendar logic to compare or sort. Most programming languages, databases, and APIs use Unix timestamps as their internal time representation.

Why are there so many timestamp formats?

Different systems chose different starting points and different units. Windows measures time in 100-nanosecond intervals since 1 January 1601. Apple's frameworks count seconds since 1 January 2001. GPS counts weeks and seconds since 6 January 1980. Excel counts days since 30 December 1899, with an intentional bug that treats 1900 as a leap year for Lotus 1-2-3 compatibility. Converting between these formats requires knowing the offset between each epoch and the Unix epoch, then accounting for differences in unit scale.

What can unixtime.wtf convert?

Paste any timestamp and get instant conversion to 17 formats: Unix seconds, Unix milliseconds, ISO 8601, RFC 2822, human readable, Windows FILETIME, Apple Cocoa time, Excel serial date, NTP timestamp, GPS timestamp, .NET DateTime ticks, WebKit timestamp, TAI, Julian Day Number, Modified Julian Date, Lilian Date, and Unix Day. The specialist tools handle JWT token decoding, cron expression parsing, relative time expressions, and batch log normalisation. All conversions happen client-side -- nothing is sent to a server.