Unix Timestamp Converter – Epoch Time to Date & Date to Timestamp

Convert Unix timestamps to human-readable dates or any date string to a Unix timestamp — entirely in your browser. A live counter shows the current epoch time in seconds and milliseconds, updating every second. In Timestamp → Date mode, paste any Unix timestamp (seconds or milliseconds) and instantly see the result in UTC, your local timezone, ISO 8601, and relative time (e.g. "3 days ago"). In Date → Timestamp mode, type any date string and get the corresponding Unix timestamp in both seconds and milliseconds. One-click copy for every output format. Includes notable timestamp examples: Unix Epoch (0), Y2K, the 2038 overflow problem, and more. Perfect for developers, backend engineers, and database administrators.

Current Unix Timestamp
Live
1,776,058,474
ms: 1,776,058,474,517

Input Unit

Convert

Notable timestamps

Unix Time counts the number of seconds elapsed since 1970-01-01 00:00:00 UTC (the Unix Epoch), ignoring leap seconds. It is used universally in databases, APIs, logs, and file systems.

How to Use the Unix Timestamp Converter

Convert a Unix timestamp to a readable date:

  1. Select the Timestamp → Date tab (default).
  2. Choose Seconds or Milliseconds depending on your timestamp format.
  3. Paste or type your Unix timestamp — the result updates instantly.
  4. Results include UTC, Local time, ISO 8601, relative time (e.g. "3 days ago"), and both seconds and milliseconds representations.
  5. Click Copy next to any row to copy just that value.
  6. Use the Notable timestamps pills to quickly load famous values like the Unix Epoch, Y2K, or the 2038 problem.

Convert a date to a Unix timestamp:

  1. Click the Date → Timestamp tab.
  2. Type any date string — ISO 8601 (2025-01-01T00:00:00Z), simple dates (2025-01-01), or natural formats like January 1 2025.
  3. Dates without a timezone suffix are treated as your local time. Append Z or a timezone offset (+00:00) for UTC.
  4. Results show the timestamp in seconds, milliseconds, ISO 8601, and UTC string.
  5. Use the preset pills (Now, Today midnight UTC, etc.) for quick fills.

What is a Unix timestamp?

  • A Unix timestamp (also called POSIX time or Epoch time) is the number of seconds elapsed since 1970-01-01 00:00:00 UTC, not counting leap seconds.
  • Many modern systems and languages use milliseconds — simply multiply seconds by 1000 (JavaScript's Date.now() returns ms).
  • The 2038 problem: 32-bit signed integers can store timestamps up to 2147483647 (2038-01-19 03:14:07 UTC). After that they overflow. 64-bit systems are safe for hundreds of billions of years.
  • Unix timestamps are timezone-independent — they always represent a point in absolute time. Timezone conversion only affects the human-readable display, not the value itself.