About this wav to m4a converter
WAV is uncompressed PCM audio: large files, no quality loss, and accepted by every editor and DAW. M4A is AAC audio in an MP4 container, the default for iPhone recordings, iTunes and Apple Music downloads. The conversion runs in your browser with ffmpeg compiled to WebAssembly, so the file never leaves your device and there is no size limit beyond your memory. WAV is lossless and M4A is compressed, so the file shrinks a lot; at the default 192 kbps the difference is inaudible for most listening.