The Files app on iPhone can store a .docx file but doesn't convert it to PDF on its own, and the Word app itself requires an account and isn't installed on every phone.
Standard formatting — headings, bold and italic text, bullet points, tables, and images — carries over visually. The output's text isn't selectable, since the page is rendered as an image rather than rebuilt as live text.
Ready to try it yourself?
Convert Word to PDF on your iPhone →No, the .docx file is converted directly in Safari without needing Word installed.
Yes, the same steps work in Safari on iPad.