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Unix Timestamp Converter

Convert Unix timestamps to human-readable dates. Support for seconds and milliseconds, multiple timezones, and ISO 8601.

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What is a Unix timestamp?

A Unix timestamp (also called Epoch time) is the number of seconds that have elapsed since January 1, 1970, at 00:00:00 UTC.

Why use Unix timestamps?

  • •Timezone independent: Represents a single moment in time
  • •Easy to compare: Simple integer comparison for ordering
  • •Compact storage: Single integer vs formatted strings
  • •Universal standard: Supported by all languages and databases

Seconds vs milliseconds

Traditional Unix timestamps are in seconds (10 digits). Many modern systems like JavaScript use milliseconds (13 digits) for greater precision.

Common formats

  • 1700000000Unix (seconds)
  • 1700000000000Unix (milliseconds)
  • 2023-11-14T22:13:20ZISO 8601

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