How do I convert my M4A files to PDF? 
Follow these six simple steps to quickly convert your audio file (*.m4a) to an Adobe PDF file (*.pdf) that you can share with colleagues and potential clients:
Step 1
Sign up for Sonix's free trial account—includes 30 minutes of free speech to pdf conversion.
Step 2
Upload your MPEG-4 Audio File file(s) (*.M4A) from your computer. You can also connect your Google Drive or Dropbox to Sonix.
Step 3
Select the language that was spoken in your M4A file. We support over 50 languages supported. Then click the button 'Start Transcribing Now.'
Step 4
Sonix automatically transcribes the audio from your M4A file and converts it to a PDF file using Artificial Intelligence. It'll only take a few minutes so you can make a quick smoothie.
Step 5
Use the Sonix AudioText Editor to polish your transcript; it's an online word processor. Simply type in your browser to correct any words before exporting it to a PDF file.
Step 6
Click the 'Export' button. Select 'PDF (.pdf)' from the dropdown to download a text version of your M4A file.
All done! Wasn't that fast? Your M4A file has now been converted to a PDF file and downloaded to your computer!
Thousands of customers trust Sonix to convert their M4A files to PDFs 
Frequently Asked Questions for MPEG-4 Audio File (*.M4A) to Adobe PDF 
What is a M4A file?
An M4A audio file is a lossless audio format (and encoding algorithm) created by Apple and utilized on a variety of Apple products (including iPod, iPhone, iPad, iTunes, and Quicktime products). The m4a codec has been open-sourced so it is quite popular. M4A files are usually encoded with Advanced Audio Coding (AAC) which was originally designed to be the successor to MP3. Both MP3 and M4A files are used for audio-only files, and are both unprotected (free from DRM features). Protected files will have a *.m4p file extension. AAC or M4A files do have better audio quality when compared to MP3 files when encoded at the same bitrate due to some of the codec’s improvements such as compression based on perception and a smaller block size for changing audio sounds and signals.
Does Sonix transcribe audio files with a *.M4A file extension?
Yes, Sonix does automatically transcribe audio files with a .M4A file extension. Sonix is an online audio to text converter. Convert any audio (mp3, m4a, wav, ...) or video (mp4, mov, avi, ...) file to text without installing any software! Sonix quickly and accurately transcribes *.M4A files and converts them to text in a Adobe PDF format.
Know anyone who needs to convert MPEG-4 Audio File (.M4A) to Adobe PDF?
We'd appreciate it if you tell them about Sonix—the best way to convert M4A to Adobe PDF.
Other ways to convert your M4A audio files with Sonix
M4A to text
Use the most accurate speech-to-text technology to convert files: M4A to text.
M4A to docx
Accurately transcribe your M4A file to Microsoft Word Format (docx) so you can bring the transcript into your workflow.
M4A to subtitles
Create subtitles for your M4A files to make them more accessible for your audience.
M4A to srt
Quickly create subtitles from your M4A files and save them as SRTs, one of the most widely supported subtitle formats.
M4A to VTT
Create more advanced captions for your M4A files by using the latest caption format VTT (Video Text Tracks).
M4A to captions
Quickly and easily create closed captions for your M4A files so you can embed them in your video files.
Convert MPEG-4 Audio File to PDF with Sonix 
Sonix automatically transcribes and translates your audio/video files in 50+ languages. Easily search, edit, and share your media files. Sonix is an online, fully-automated speech to text service that quickly converts files in the MPEG-4 Audio File format to Adobe's portable document format also known as PDF. Sonix does this conversion for you with the highest quality. Fast, accurate, and affordable. Millions of users from all over the world.
Includes 30 minutes of free transcription
