Unix Timestamp Converter

Convert Unix timestamps (seconds or milliseconds) to ISO dates and back — private, instant, in-browser.

100% In-Browser & Private — your data never leaves this device

PeachTools Pro

Batch processing, unlimited files, ad-free.

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How to use the Unix Timestamp Converter

  1. Paste a Unix timestamp (seconds or ms) or an ISO date string.
  2. Or click Now (seconds) / Now (ms) to load the current time.
  3. Review Unix, ISO, UTC, and local representations.
  4. Copy any value you need — nothing is uploaded.

FAQ

Seconds or milliseconds?
Values with about 13 digits are treated as milliseconds; shorter integers as seconds.
Is my timestamp sent to a server?
No. Conversion runs entirely in your browser.

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