Timestamp Converter.

Paste any timestamp. It works out what it is, and shows it in every format and time zone.

Runs in your browser. Nothing you paste is uploaded or stored.

Convert a time Why so many formats

Converter

What time is that, really?

Unix, Windows, browsers, Apple and Excel all count differently. Paste a number or a date and see every reading.

Timestamp or date

Time zone

Now: Unix seconds

Why so many formats

Everyone picked a different zero.

Unix

Seconds since 1970.

Linux, macOS, most logs and JWTs count seconds from 1 January 1970 UTC. JavaScript and many APIs use milliseconds, which makes the number 1,000 times longer.

Windows and browsers

Counting from 1601.

Windows FILETIME counts 100 nanosecond steps from 1601. Chrome history and cookies count microseconds from 1601. Both are common in forensic work.

Apple and Excel

2001, 1904 and 1900.

Apple frameworks count seconds from 2001, older Mac file systems from 1904, and Excel counts days from 1899. The same number can be decades apart.

Mixing seconds and milliseconds.A 13 digit number is almost always milliseconds. Read it as seconds and you land thousands of years away.

Assuming local time.Evidence should be recorded in UTC. A report with no time zone can be off by hours, and daylight saving makes it worse twice a year.

Trusting the clock.A device clock can be wrong or changed. When it matters, compare the timestamp with other sources before you rely on it.

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