Document
What is a .001 file?
A .001 file is a Wordcraft Chapter Files. This is a document format, so it holds text and layout meant to be read. Confusingly, this extension has been used by 2 different formats over the years — they're all listed below.
This extension has been used by more than one format
2 different formats have claimed .001 over the years, so two files with the same extension aren't necessarily the same kind of thing.
How to open a .001 file
- Try LibreOffice (free, Windows/Mac/Linux) — it opens an enormous range of current and historic document formats.
- Microsoft Word and Google Docs handle most mainstream document types.
- If nothing opens it, open it in a text editor: many older document formats have readable text inside.
The registry records this extension against Wordcraft Chapter Files, S-57 Electronic Navigational Chart, so software from that family is the most likely match.
How to convert a .001 file
- Once it opens in LibreOffice or Word, Save As .docx or .pdf to get it into a format you can use anywhere.
The technical record
For archivists, developers and the merely curious: these are the PRONOM registry entries for .001.
| Format name | Version | MIME type | PUID |
|---|---|---|---|
| Wordcraft Chapter Files | — | — | fmt/1723 |
| S-57 Electronic Navigational Chart | 3.1 | — | fmt/1935 |