Works with voice memos
Convert common M4A recordings into MP3.
VoysumPrivate browser tool
M4A to MP3 Converter
Create a widely compatible MP3 from an M4A recording without uploading it anywhere.
No uploadNo accountFree to use
✓ Runs locally in your browser
↥Choose or drop a fileaudio/mp4, audio/x-m4a, .m4a · up to 500 MB
🔒 Your media file is never uploaded to Voysum.
Private by default
Useful conversion without giving up your file.
Stays on your device
No media file is sent to our backend.
Broad compatibility
MP3 works with most players and editing tools.
Common questions
M4A to MP3 Converter FAQ
How local browser processing works and what to expect.
Do I need to rename M4A to MP3?
No. Renaming is not conversion; this tool properly decodes and re-encodes the audio.
Can I transcribe the converted file?
Yes. Download it or use the Voysum transcription uploader.
Keep working
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Trim audio locally in your browser and download only the section you need.
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Open tool →Free browser toolMP3 to WAV Converter
Convert MP3 to uncompressed WAV locally in your browser.
Open tool →Turn this recording into searchable text.
Download the result, then upload it to Voysum for an editable transcript plus TXT, SRT, VTT, and CSV exports.
Continue to audio transcription