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Unix timestamp converter

Convert Unix timestamps to readable dates.

Runs in your browser

Select seconds, milliseconds or an ISO date below.

OutputText · 0 bytes
Your result will appear hereAdd your input, choose the options and run the tool.

Your input stays on this device. Nothing is uploaded or saved.

Guide & examples

About Unix timestamp converter

Convert Unix timestamps or ISO dates into UTC, ISO 8601, Unix seconds, and Unix milliseconds.

When to use it

Check whether an API timestamp is expressed in seconds or milliseconds.

Unix timestamp converter example
Unix seconds: 0
Unix milliseconds: 0
ISO 8601: 1970-01-01T00:00:00.000Z

How to use it

  1. Choose seconds, milliseconds, or ISO date input.
  2. Paste a timestamp or ISO date.
  3. Convert and copy the result.

Limits & privacy

Dates without a time use UTC midnight. Date-time inputs require an explicit timezone. Conversion is local and preserves millisecond precision.

Use this tool from the API reference or connect through the SDK, CLI, SSH, or MCP. Hosted calls share your plan allowances.