Date and timestamp converter

  1. Input
  2. Options
  3. Result

Input type

Timestamp unit

The input offset is a fixed number of minutes, not a named IANA time zone. It does not resolve repeated or skipped local times at daylight-saving transitions. Display zones use browser data; day-of-year and ISO week use UTC.

Conversion runs in your browser. Calendar input uses YYYY-MM-DD with an optional time such as HH:mm:ss.SSS. An explicit Z or a numeric offset overrides the fixed input offset. Regional date formats and leap seconds are not accepted.

Convert dates and timestamps online

Paste a Unix timestamp, millisecond timestamp or date string and see equivalent date formats.

The converter is useful when debugging APIs, logs, analytics exports and scheduled events.

Quick start

Convert dates and Unix time with explicit units and offsets.

  1. Choose calendar input or Unix seconds/milliseconds
  2. Enter the value and choose a display time zone
  3. Calculate, inspect and export the date report
✓ The tool runs directly in the browser and is ready for quick checks without installing software.
✓ Input can be cleared and recalculated immediately, which is useful for repeated small tasks.
✓ Use fullscreen mode when you need more space for long text, structured data or large result blocks.
✓ Copy buttons are available on generated output so results can be reused in code, documents or support chats.
✓ Most operations are deterministic: the same input and options produce the same output.
✓ For sensitive content, prefer local browser tools and review the result before sharing it further.

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