Timestamp Converter

The Timestamp Converter converts between Unix timestamps (epoch) and human-readable dates, supporting both seconds and milliseconds. The Unix timestamp — the count of seconds since January 1, 1970 — is the standard format for storing and transmitting dates in software systems, but it is completely unreadable without a conversion tool.

To use it, type a timestamp in the input field and the formatted date appears instantly, or enter a date to get the epoch value. The tool automatically detects whether the value is in seconds (10 digits) or milliseconds (13 digits), which is the format used by JavaScript. The current timestamp is also displayed and updated in real time, providing an immediate reference point.

In the reverse direction — date to timestamp — you can select or type any date and time and get the corresponding epoch value in both formats. This is frequently needed when writing database queries with time filters, configuring cache TTL values, debugging JWT tokens with 'iat' and 'exp' fields, and analyzing system logs that use epoch time.

The conversion respects the time zone configured on your device to display the local date, but also shows UTC time to avoid ambiguity. No data is sent to servers — all logic runs in the browser's JavaScript engine.