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Timestamp Converter: Unix, ISO and Local

Translate between Unix seconds, Unix milliseconds, UTC, and local date-time formats without leaving the browser.

Inputs

Results

Results update as you use the interface above.

How to Use This Timestamp Converter

Paste a Unix timestamp to decode it or choose a local date and time to convert it into Unix seconds and milliseconds.

  1. Paste a Unix timestamp to convert it

    Enter any integer into the timestamp field and click Convert from timestamp. The tool auto-detects whether the value is seconds (10 digits) or milliseconds (13 digits) and outputs both formats together.

  2. Or pick a date and time to go the other way

    Use the date-time picker to select a moment in your local time zone and click Convert from date. You get back the Unix seconds and milliseconds for that instant.

  3. Read the full output

    The result shows Unix seconds, Unix milliseconds, ISO 8601, UTC, and local time together. Compare them side by side to confirm the timezone offset and unit before copying.

  4. Use the Now shortcut

    Click Now to load the current time in both input fields and convert it immediately. The current time display in the panel also refreshes every second as a live reference.