Audio → Audio
AACtoFLAC
Drop your files here
Video, audio, images and documents: MP4, MP3, HEIC, DOCX, PDF and 33 more formats. Several files or a link at once.
Choose files
Why convert
AAC — an audio codec that sounds cleaner than MP3 at the same bitrate. FLAC — lossless compression: WAV quality at roughly half the size. Needed for editing when a program asks for FLAC.
What changes in the file
Quality will not improve: what AAC compression threw away is gone; the file just gets bigger.
Which settings to pick
A lossless format with little to tune: you can trim the recording and change the volume.