Thousands of Sonix customers convert their Japanese M4A files to text 
What's the best way to convert Japanese M4A files to text? 
Use Sonix to convert Japanese M4A files to text
Follow these six easy steps to quickly and easily convert your Japanese M4A files to text:
Step 1: Log into your Sonix account
If you don't have one, you can sign up for Sonix's free account—30 minutes of free transcription/translation.
Step 2: Upload your Japanese M4A file
In Sonix, click “Upload” and locate the Japanese M4A file on your computer.
Step 3: Choose language: Japanese
Select Japanese in the dropdown that asks 'What language was spoken?.' Then, click the “Transcribe” button.
Step 4: Sonix transcribes your M4A file
Sonix automatically transcribes your Japanese M4A file and converts it to Japanese text.
Step 5: Polish your Japanese transcript
Edit your Japanese transcript by typing directly into your browser to correct any words that were not transcribed perfectly.
Step 6: Export Japanese text
Export the Japanese text to any format you want including MS Word, PDF, subtitles, or a simple text file.
All done! You have now successfully converted your Japanese M4A file to text!
How to improve the accuracy of your Japanese transcripts?
Start by improving the quality of the Japanese M4A file that you upload to Sonix. Please use high quality recording equipment, recording in a quiet environment, and ensure that your speakers are speaking clearly to ensure that your transcript is as accurate as possible.
Any advice for the Japanese M4A file that I upload?
Yes, please do not over-compress or over-filter the audio track of your Japanese M4A file. By uploading a high quality version of your audio, we can give you the best level of accuracy.
Aside from M4A, do you support other types of audio/video files?
Yes, we do! You can convert the following file types in Japanese with Sonix:
What customers say about Sonix's automated transcription 
It really accelerated my work and I was amazed by the accuracy, especially given that the video featured only non-native speakers.
I ran through your software and it is fantastic! For what we need it's a game-changer.
Impressed at how seamless Sonix makes editing transcripts. This is so much easier and more enjoyable than manually writing an entire transcript myself.
I love Sonix. It's accurate, intuitive, friendly and simple to use for the technically inept like me! I typically use it for English but we used it this time in French and it was great too.
I need to produce very accurate transcripts and the initial transcripts Sonix produces are much better than competitors (I've used many others).
The accuracy for the translation was the best from all the other sites and apps I tried.
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Convert Japanese M4A files to text with Sonix 
Sonix automatically transcribes and translates your audio/video files in 38+ languages. Easily search, edit, and share your media files. Sonix uses advanced transcription and translation algorithms to convert your Japanese M4A files to text both fast and accurate. Fast, accurate, and affordable. Millions of users from all over the world.
Includes 30 minutes of free transcription