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Free browser tool

Date / time format converter

Convert a date/time value to ISO 8601, RFC 3339, Unix seconds/milliseconds, and localized forms.

Input and settings

How to use

Convert a date/time value to ISO 8601, RFC 3339, Unix seconds/milliseconds, and localized forms.

  1. Enter or paste the source data.
  2. Adjust only the options you need.
  3. Run the tool, verify the result, then copy or download it.

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