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Free M4a to MP3 Converter vs Switch Audio File Converter: catalog facts
Free M4a to MP3 Converter	Switch Audio File Converter
Free Freeware with no charge.	Freemium Free for non-commercial use; commercial use requires a paid licence.
Windows	Windows, macOS, Android
Handles M4b audiobooks and other rarer MPEG-4 audio formats Converts whole folders including subfolders	Batch conversion of many files at once Wide range of input and output formats, including dictation formats
Windows only Output limited to MP3 and WAV	Free version limited to non-commercial use Closed source
Downloadable app	Downloadable app
Closed source	Closed source
License: Freeware	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.