It is possible to convert audio files in WAV format and make an Apple iPhone ringtones from them. This can be done using programs like Xillsoft iPhone Ringtone Maker.
Convert WAVe PCM Sound, standard Windows sound format to Apple iPhone ringtone format.
We have found 4 software records in our database eligible for .wav to .m4r file format conversion.
Microsoft Windows software - convert wav to m4r on Windows
A dedicated audio conversion program
Convert from wav file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned wav to m4r. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
App used to create own ringtones for Apple iPhone
A ringtone making software
Apple macOS / Mac OS X software - convert wav to m4r on OS X
A iPhone ringtone creator for Mac