Time Converter

Unix Timestamp to Date Converter

A Unix timestamp (also called epoch time) is the number of seconds elapsed since January 1, 1970 00:00:00 UTC. It is the standard time representation in programming: database records, API responses, JWT expiration claims, server logs, and file metadata all use this format.

This free epoch converter auto-detects whether your timestamp is in seconds, milliseconds, or nanoseconds, and converts it instantly to any timezone with DST-safe handling.

How to convert a Unix timestamp

1. Paste a Unix timestamp (seconds or milliseconds) into the input field.
2. The tool auto-detects the unit and displays the converted date and time.
3. Select a target timezone for localized output.
4. Use the duration calculator to find the difference between two timestamps.
5. Copy the formatted result in ISO 8601 or your preferred format.

Unix timestamp in JavaScript

• Get the current timestamp in milliseconds: Date.now()
• Get the current timestamp in seconds: Math.floor(Date.now() / 1000)
• Convert a timestamp to a Date object: new Date(timestamp) (pass milliseconds)
• Convert a Date to a timestamp: date.getTime() or +date

Common Unix timestamps

• 0: January 1, 1970 00:00:00 UTC (the Unix epoch)
• 1000000000: September 9, 2001 01:46:40 UTC
• 1700000000: November 14, 2023 22:13:20 UTC
• 2147483647: January 19, 2038 03:14:07 UTC (32-bit Unix time limit)

Seconds vs milliseconds vs nanoseconds

• Seconds: Standard Unix time (10 digits today). Used by most Unix/Linux APIs and databases.
• Milliseconds: Used by JavaScript Date.now(), Java, and most modern web APIs (13 digits today).
• Nanoseconds: Used by high-precision systems, Go's time.UnixNano(), and some databases (19 digits).

Whether you are debugging API responses, inspecting JWT expiration claims, analyzing server logs, or working with date math in any language, this free epoch to date converter is an essential bookmark for any developer.