UNIX · ISO 8601 · UTC · DISCORD

Unix
Timestamp Converter

Convert a timestamp to a date, and back, in seconds or milliseconds.

No data is sent to a server: everything runs locally, in your browser, with no account, no tracker, nothing to install.

THE ESSENTIALS

Timestamp converter

Ready

Unix timestamp

10 digits = seconds, 13 digits = milliseconds, detected automatically. Date and time Input time zone Sets how the entered date is interpreted.

UTC time—

UTC—

ISO 8601—

Discord timestamp —

Ago / in—

Enter confirms and adds to history · N jumps to current time · H opens history

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RIGHT NOW

Current timestamp

The current Unix time, updated every second.

Seconds—

Milliseconds—

ISO 8601—

Discord timestamp—

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MULTIPLE VALUES

Batch conversion

Paste up to 25 timestamps, one per line.

Output format Unit and precision

Conversions will appear here.

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Difference between two dates

Compare two timestamps or dates and get the exact duration.

Unit of the entered timestamps First date / timestamp Second date / timestamp Show the difference in

Enter two values.

Tip: a Unix timestamp counts the seconds since January 1, 1970, UTC. JavaScript typically uses milliseconds.

Understanding the Unix timestamp

A Unix timestamp is the number of seconds elapsed since January 1, 1970, 00:00:00 UTC, a reference point known as the “epoch”. It’s the most common way to store a date in a program, a database, or a log file.

Seconds or milliseconds?

A 10-digit timestamp is in seconds, a 13-digit one is in milliseconds. For example, 1722505500 corresponds to August 1, 2024 at 09:45:00 UTC, and 1722505500000 refers to the same instant in milliseconds. JavaScript returns milliseconds with Date.now(); Python and PHP return seconds with time.time() and time().

Does a timestamp depend on the time zone?

No. A timestamp always refers to the same instant, no matter where in the world you are. Only the display changes: the same timestamp reads 09:45 in UTC and 11:45 in Paris during summer time.

Can a timestamp be negative?

Yes. A negative value refers to a date before January 1, 1970. For example, -86400 corresponds to December 31, 1969.

What is the year 2038 problem?

Systems that store the timestamp as a signed 32-bit integer can’t go beyond 2147483647, which is January 19, 2038 at 03:14:07 UTC. Beyond that, the value overflows. 64-bit systems aren’t affected.

UnixTimestamp Converter