This Unix timestamp converter supports timezone selection, two-way conversion between local time and second/millisecond timestamps, real-time current timestamp display, and one-click copy of results.

All tools on this site run entirely in your browser locally. No data is uploaded to any server.

Features:

• Displays the browser's local timezone IANA name, standard time/DST status, and timezone; timezone is freely switchable
• Real-time display of current local time and the corresponding 10-digit (seconds) and 13-digit (milliseconds) timestamps
• Timestamp to local time with auto-detection of 10/13 digits: 10 digits are treated as seconds, 13 digits as milliseconds
• Local time to timestamp, optionally seconds (10-digit) or milliseconds (13-digit)
• 1 second = 1000 milliseconds; append three zeros to a 10-digit timestamp to get the 13-digit one
• Date picker support with one-click fill of current time
• One-click copy of conversion results

Common uses:

• Converting between database timestamps and date-time values
• Timestamp conversion and validation during API debugging
• Interpreting timestamps in log analysis
• Unifying timestamp formats across programming languages