How to convert flac to m4r on PC as I can't upload flac to iphone?

MediaHuman Audio Converter is an excellent audio conversion tool. It is completely free, and it can perform audio processing locally, effectively securing your privacy. The tool is fast and can quickly convert audio files to the desired format, although you may need to rename the files manually after conversion. In addition, it also supports audio editing features, and you can adjust the ringtone duration according to your needs.

Then open this free flac to m4r converter software, click the + button, select the flac audio file, tap Open, select the desired format, click the 'Format' drop-down menu, select 'M4R', you can tap Settings to adjust the bit rate.

If you want to make a ringtone you can do so, right click on the file and choose Trim, because M4A ringtones are limited to at least 30 seconds.

Tap 'Start' Conversion button to save it to the default output folder, and rename sample.m4a to sample.m4r in File Explorer. This is the way for converting .flac to m4r for making iphone ringtones.

In terms of operation, the installation is easy, the interface is simple and clean, and it is easy to add files and select formats. In terms of functions, the format conversion speed is fast and supports various formats, the editing function can meet the requirements of M4R ringtone duration, and the bit rate can be adjusted to optimize the audio quality. In terms of privacy protection, local processing avoids the risk of privacy leakage.

Of course, it also has some shortcomings. You need to rename the file manually after conversion, and compatibility problems occasionally occur when dealing with audio in special encoding formats. But these small shortcomings do not affect the overall use, for users with audio processing needs, it is still a good choice.