Developer & Text · Timestamp Converter

Convert a Unix timestamp to a date, and a date to Unix time

Quick answer

Open Toolfox → Timestamp Converter and paste Unix timestamps or dates, one per line, to see them in UTC and your local time zone as you type. Seconds, milliseconds, microseconds and nanoseconds are detected automatically. It runs entirely on your computer (Mac, Windows or Linux). Files are never uploaded.

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How to do it

  1. Open Timestamp Converter.
  2. Type or paste values, one per line. Leave it empty or type “now” for the current time.
  3. Set the unit if needed, and whether dates like 03/04/2026 are read day first.
  4. Copy the result or Save… it as timestamps.txt.

Options you can set

  • Timestamp unit
  • Day first (18/10/2026)
  • Dates without a time zone are

Good to know

  • Enter one value per line. Leave the input empty or type “now” to see the current time.
  • Accepts ISO 8601 / RFC 3339, RFC 2822 and common formats like 2026-10-18 14:30, 18.10.2026 and Oct 18, 2026.
  • Relative times use months of 30.44 days and years of 365.25 days. Leap seconds aren't counted, as in Unix time.
  • Local time uses this computer's time zone setting.

Timestamp Converter FAQ

Which date formats does it accept?

ISO 8601 / RFC 3339, RFC 2822 and common formats like 2026-10-18 14:30, 18.10.2026 and Oct 18, 2026.

How does it tell seconds from milliseconds?

By the number of digits: up to 11 digits is seconds, then milliseconds, microseconds and nanoseconds. You can also choose the unit yourself.

Are leap seconds counted?

No, just as in Unix time itself. Local time uses this computer's time zone setting.

Is Timestamp Converter in Toolfox free?

Yes. Timestamp Converter is one of 57 tools in Toolfox, a free app for Mac, Windows and Linux with no account, ads, limits or watermarks.

Does Timestamp Converter upload my files?

No. Toolfox processes files on your own computer and works offline; your files are never uploaded.

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Updated 2026-10-18 · Toolfox v0.2.1