Unix Timestamp Converter

About the Unix Timestamp Converter

A Unix timestamp (epoch time) is the number of seconds since 1 January 1970 UTC — the way computers, databases, APIs and log files store a moment in time. This converts a timestamp into a readable date and a date back into a timestamp, and shows the current epoch time live. It's an everyday tool for developers reading logs, debugging API responses, or setting a value in a database.

How it works

Timestamp → date: you enter an epoch value and say whether it's in seconds or milliseconds; the tool shows the moment three ways — in your local time zone, in UTC, and in ISO 8601 format. Date → timestamp: you pick a date and time and it returns both the Unix seconds and milliseconds. A live counter at the top shows the current Unix time, ticking every second.

Assumptions and behaviour

• Epoch time is counted in UTC from 1970-01-01 00:00:00. Seconds is the classic unit; milliseconds (used by JavaScript and many systems) is also supported — pick the right one.
• The local time shown uses your device's time zone and locale, while UTC and ISO are zone-independent.
• The date → timestamp field interprets your entry in your local time zone.
• The current-time counter updates once per second.

Limitations

• Seconds vs milliseconds is a common trap — a millisecond value read as seconds lands thousands of years in the future. Make sure the unit matches your source (a 10-digit number is usually seconds; 13 digits is usually milliseconds).
• It relies on your device's clock and time zone for local time and for interpreting the date field; if those are wrong, the results shift.
• It handles the standard epoch; it doesn't model leap seconds (which Unix time ignores by design) or dates before 1970 beyond what your browser supports.
• This converts epoch values — it isn't a time-zone converter for a time of day between two named zones.

Privacy

The conversion runs entirely in your browser. Nothing is uploaded or stored.