What is a Unix timestamp?

A Unix timestamp (also called epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. It is widely used in programming, databases, and APIs to represent dates and times as a single integer value.

Does this tool detect millisecond timestamps automatically?

Yes. The converter automatically detects whether your input is in seconds (10 digits) or milliseconds (13 digits) and converts accordingly. Both formats are shown in the output results for easy reference.

What date formats does the timestamp converter output?

The tool outputs dates in ISO 8601, RFC 2822, localized long format, short date/time format, relative time (e.g., '3 days ago'), and both seconds and milliseconds representations. It also shows the day of the year.

Free Tool

Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa with this free online tool. Features a live epoch clock, automatic detection of seconds vs milliseconds, multiple output formats including ISO 8601 and RFC 2822, and timezone support for 14 major timezones worldwide.

Convert Unix timestamps to human-readable dates and back. Live clock, multiple output formats, and timezone support.

Current Unix Timestamp

📅 Timestamp to Date

Unix Timestamp (seconds or milliseconds)

Timezone

⏱ Date to Timestamp

Date

Time

Timezone

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