There are three quick ways to convert Word documents to PDF on Mac, all completely free.
Open the document in Word. File → Save As → File Format → PDF → Save. This is the most accurate method — uses Word's own PDF export engine.
In any app on Mac, press Cmd+P. In the print dialog, click the PDF dropdown at bottom-left → Save as PDF. Universal method that works in Word, Pages, Google Docs, and any other Mac app.
Tip: Use Cmd+P → Save as PDF for any document on Mac — not just Word. Works in Safari, Pages, Numbers, and every other Mac app.
Go to pdfeditor.onl/convert-pdf in Safari. Select DOCX → PDF. Upload and convert. Useful when working in Google Docs or if Word is not installed.
Method 1 (Word Export) preserves formatting most accurately since it uses the same rendering engine as Word.
Yes — all three methods are completely free on Mac.