About Timestamp Converter
The Timestamp Converter is a free online tool for working with Unix timestamps and date-time strings. It supports bidirectional conversion: convert a Unix timestamp (in seconds or milliseconds) to a human-readable date, or convert an ISO 8601 date string back into a Unix timestamp. A built-in timezone selector lets you see the date formatted in any major world timezone.
How to Use
The tool has two tabs. In the Unix to Date tab, enter a Unix timestamp (the tool automatically detects whether it is in seconds or milliseconds) and select your preferred timezone. You will instantly see the ISO 8601 representation, a formatted human-readable date, a relative time description (e.g., "3 hours ago"), and the UTC string. In the Date to Unix tab, paste an ISO 8601 date string and the tool will display the corresponding Unix timestamp in both seconds and milliseconds. Click the "Now" button on either tab to load the current time.
Use Cases
Developers working with APIs, databases, and log files frequently need to convert between Unix timestamps and human-readable dates. DevOps engineers troubleshooting event logs benefit from the timezone-aware formatting. Product managers reviewing analytics data can quickly decode timestamp columns. QA testers can verify that expiry dates and scheduling logic produce the correct epoch values. The tool is also useful for anyone who encounters Unix timestamps in JSON responses, CSV exports, or command-line output.
Supported Timezones
The timezone selector includes major zones across North America, Europe, Asia, Australia, South America, and Africa. All formatting is done using the browser's built-in Intl API, ensuring accurate daylight saving time adjustments. No data leaves your browser, so conversions are instant and private.