What is a Unix timestamp?

It's the number of seconds that have elapsed since 00:00:00 UTC on 1 January 1970, known as the Unix epoch. It's a compact, time-zone-free way to represent an instant.

Seconds or milliseconds — which is it?

Unix timestamps are traditionally in seconds (10 digits today). JavaScript and many APIs use milliseconds (13 digits). The converter detects the magnitude and handles both.

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Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates, in your local time zone or UTC.

Current Unix time

—

Timestamp → date

Seconds or milliseconds — auto-detected.

Enter a timestamp to convert it to a date.

Date → timestamp

Pick a date and time to get its Unix timestamp.

What this does

Turn a Unix timestamp (seconds or milliseconds since 1970) into a readable date, or convert any date into a timestamp. Shows both local time and UTC, plus the ISO 8601 form. A live clock shows the current epoch time.

How to use it

1Enter a timestamp to see the date, or pick a date to see the timestamp.
2The tool auto-detects seconds vs milliseconds.
3Copy whichever format you need — local, UTC or ISO.

Examples

1700000000 → Tue, 14 Nov 2023 22:13:20 UTC
The current epoch time ticks live at the top

Frequently asked questions

What is a Unix timestamp?: It's the number of seconds that have elapsed since 00:00:00 UTC on 1 January 1970, known as the Unix epoch. It's a compact, time-zone-free way to represent an instant.
Seconds or milliseconds — which is it?: Unix timestamps are traditionally in seconds (10 digits today). JavaScript and many APIs use milliseconds (13 digits). The converter detects the magnitude and handles both.

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