Timestamp Converter

What is Timestamp Converter?

A timestamp converter translates between Unix timestamps (seconds or milliseconds since January 1, 1970 UTC) and human-readable date-time strings in various formats (ISO 8601, RFC 2822, locale-specific). It handles timezone conversions and relative time calculations.

How to use this calculator

1. 1Enter a Unix timestamp (in seconds or milliseconds) to convert it to a human-readable date and time.
2. 2Or enter a human-readable date to convert it to a Unix timestamp for use in your code.
3. 3Toggle between seconds and milliseconds to handle both formats correctly.
4. 4Select the target timezone to see the local time equivalent.
5. 5Use the relative time output to quickly understand how long ago or in the future a timestamp is.

Why this matters for founders

Unix timestamps are the standard time format in databases, APIs, and logs, but they are unreadable by humans. Developers constantly need to convert between machine timestamps and human dates when debugging, analyzing logs, or working with time-based data.