Unix (s):1782526290
Unix (ms):1782526290840
ISO 8601:2026-06-27T02:11:30.840Z
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Unix Timestamp Converter

Paste anything
✓ detected: unix timestamp (seconds)

Standard formats

unix timestamp (seconds)
1630454400
unix timestamp (milliseconds)
1630454400000
iso 8601 (utc)
2021-09-01T00:00:00.000Z
iso 8601 (local, no Z)
2021-09-01T00:00:00
rfc 2822 (email/http)
Wed, 01 Sep 2021 00:00:00 +0000
human readable
Wednesday, 1 September 2021, 00:00:00 UTC

Timezones

UTC
01 Sept 2021, 00:00:00
UTC
01 Sept 2021, 00:00:00
—

Platform-specific formats

windows filetime
132749280000000000
apple cocoa time
652147200
excel serial date
44440.00000
ntp timestamp
3839443200
gps timestamp
Week 2173, ToW 259200s
.net datetime ticks
637660512000000000
webkit timestamp
13274928000000000
tai timestamp
1630454437
(UTC +37s, as of 2017)
julian date
2459458.50000
modified julian date (mjd)
59458.00000
lilian date
160298
unix day
18871

ABOUT THIS TIMESTAMP

Unix timestamp 1630454400 represents Wednesday, 1 September 2021 at 00:00:00 UTC. In milliseconds it is 1630454400000. This moment falls on day 244 of 2021, in week 35. The ISO 8601 representation is 2021-09-01T00:00:00.000Z. The Windows FILETIME equivalent is 132749280000000000. The Apple Cocoa timestamp is 652147200. The Excel serial date is 44440.00000. The NTP timestamp is 3839443200. The Modified Julian Date is 59458.00000. The Unix Day number is 18871.

DAY OF WEEK
Wednesday
DAY OF YEAR
244 of 365
WEEK NUMBER
Week 35
UNIX DAY
18871
LEAP YEAR
No
DAYS FROM TODAY
1760 days ago
UTC OFFSET FROM NOW
-1760 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.