The "best" method depends on the document's complexity. For a simple academic paper with standard text and basic formulas, an automated Pandoc conversion is efficient and sufficient. For a heavy mathematical dissertation or a paper destined for a journal with strict Word templates, a hybrid approach is best: using tools to convert equations while manually restructuring the text to fit Word’s style architecture.
If you aren't comfortable with the command line or just need a one-off conversion, online tools are your best bet. latex to word
Sometimes you don't need the whole document—just a few complex formulas. Modern versions of Word (2019 and later) actually have a built-in LaTeX engine. Covert LaTeX document to Word (.docx) for free using Pandoc The "best" method depends on the document's complexity