Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates.

100% Browser-Based

Files Never Leave Your Device

No Server Uploads

Zero Data Collection

How It Works

Input a Unix timestamp (seconds or milliseconds) or pick a date

Conversion happens instantly as you type

Copy any format with one click

See the current Unix timestamp updating every second

Automatically detects seconds vs milliseconds timestamps

ISO 8601, RFC 2822, locale-specific, and relative time output

Convert timestamp to date or date to timestamp

What is a Unix timestamp?

A Unix timestamp is the number of seconds since January 1, 1970 00:00:00 UTC (the Unix epoch).

How does it detect seconds vs milliseconds?

Timestamps with more than 10 digits are treated as milliseconds. For example, 1700000000 is seconds, 1700000000000 is milliseconds.