A: TTF is for desktop use (Word, Photoshop). WOFF is for web use (CSS code). If you just want to type a letter, use the TTF.

In summary, the "conversion" from ZIP to TTF usually involves extracting the TTF file from the ZIP archive. If you're developing an application or need a specific feature, consider using libraries that can handle both ZIP and TTF formats programmatically.

If you insist on using a dedicated tool, here is a comparison of the top utilities that advertise this functionality.