Unix Timestamp Converter

What is the Free Unix Timestamp Converter?

The free Unix Timestamp Converter translates Unix epoch timestamps to human-readable dates and converts dates back to timestamps — in seconds or milliseconds. In Timestamp → Date mode, paste any epoch value (like 1716800000) and instantly see it rendered in 7 formats: ISO 8601, UTC, Local, Date only, Time only, Unix (sec), and Unix (ms). In Date → Timestamp mode, pick any date and time to get its exact Unix timestamp. Hit Use current time to populate the current epoch in one click.

• → Decode timestamp values from server logs, database records, or API JSON responses
• → Convert "created_at" or "expires_at" epoch fields into readable dates while debugging
• → Find the Unix timestamp for a specific date to use in database queries or API calls
• → Check when a JWT token was issued (iat claim) or when it expires (exp claim)
• → Compare timestamps across different time zones using the ISO 8601 and UTC formats

How to Use the Free Unix Timestamp Converter

1. 1 Choose your conversion direction using the tab buttons: Timestamp → Date or Date → Timestamp.
2. 2 Select the unit — Seconds for 10-digit timestamps (e.g. 1716800000) or Milliseconds for 13-digit timestamps (e.g. 1716800000000).
3. 3 For Timestamp → Date: type or paste your Unix timestamp into the number input field. For Date → Timestamp: use the date-time picker to select a date and time.
4. 4 Click Use current time to automatically fill in the current timestamp or date.
5. 5 Read the results table showing all 7 formats. Hover over any row and click copy to copy that specific format to your clipboard.

Key Features

• 🔁
  Both directions

  Convert timestamps to human-readable dates and dates back to timestamps with one mode switch.
• 🕐
  Seconds & Milliseconds

  Handles both 10-digit (seconds) and 13-digit (milliseconds) Unix timestamps.
• 🌐
  7 output formats

  ISO 8601, UTC, Local time, Date only, Time only, Unix (sec), and Unix (ms) — all shown at once.
• 📋
  Hover to copy

  Copy any individual format from the results table with a hover-and-click.
• ⏱️
  Current time button

  Instantly load the current Unix timestamp or date with one click.

Example Usage

1716800000

ISO 8601: 2024-05-27T11:33:20.000Z
UTC:      Mon, 27 May 2024 11:33:20 GMT
Local:    5/27/2024, 12:33:20 PM

Frequently Asked Questions about the Free Unix Timestamp Converter

What is the free Unix Timestamp Converter?

Convert Unix timestamps to human-readable dates and vice versa.

Is the Unix Timestamp Converter free to use?

Yes, the Unix Timestamp Converter is completely free. No account, subscription, or signup is required — ever.

Does my data get uploaded anywhere?

No. The Unix Timestamp Converter runs entirely in your browser. Your data is never sent to any server.

Does it work offline?

Yes. Once the page has loaded, the tool works without an internet connection.

Which browsers are supported?

All modern browsers — Chrome, Firefox, Safari, and Edge. No plugins or extensions required.

What is a Unix timestamp?

A Unix timestamp (also called epoch time) is the number of seconds — or milliseconds — that have elapsed since 00:00:00 UTC on 1 January 1970 (the Unix Epoch). It is the most common way to store dates in databases, APIs, and logs because it is time-zone-independent, easy to compare, and compact to store.

How do I know if my timestamp is in seconds or milliseconds?

Count the digits. A 10-digit number (e.g. 1716800000) is in seconds. A 13-digit number (e.g. 1716800000000) is in milliseconds. JavaScript's Date.now() returns milliseconds; most Unix/Linux tools and many databases return seconds. If your converted date looks like it's in 1970 or far in the future, you have the wrong unit selected.

Does this tool handle negative timestamps (dates before 1970)?

Yes. Negative Unix timestamps represent dates before 1 January 1970. For example, -86400 is 31 December 1969. The browser's Date object supports the full range from approximately 271,821 BCE to 275,760 CE.

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