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Choose a supported audio or video recording up to 100 MB.
Free online tool
Transcribe M4A Audio to Text
Upload an M4A voice recording from your phone or computer and turn its speech into editable text. Keep the original file, review uncertain words with playback and download the transcript in the format you need.
Creating your transcript…
Long recordings can take a few minutes. Keep this tab open.
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Supported formats16 audio/video formats · 100 MB
Transcription languages90+ languages with automatic detection · 7 manual presets
DownloadTXT · DOCX · PDF · SRT · VTT · JSON
AUDTEXT
Your transcript
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One transcript, every useful format
Designed for this workflow
M4A to Text
M4A recordings are useful for voice memos, interview audio and spoken notes. AudText accepts the .m4a extension directly, so there is no need to convert a valid M4A recording to MP3 first. Files must be no larger than 100 MB; a supported extension alone does not guarantee that a damaged or unusual recording can be processed.
✓ Free to use · No signup · Raw uploads deleted after processing✓ One transcript, every useful format✓ Word-level playback
Use the original voice recording
Save or export the actual M4A file from the recorder or storage location you use, then select it in AudText. Upload a file rather than a sharing link. Re-recording playback through a microphone adds room noise, while converting an already compressed recording can remove more speech detail.
Choose the language spoken in the file
The language selector describes the recording’s speech, which can differ from the language of the webpage. Select English, Spanish, Portuguese, German, French, Russian or Turkish when appropriate. For another language or when you are unsure, choose automatic detection before starting transcription.
Review a voice memo as editable text
After processing, use word playback to return to an unclear name, date or number. Switch to the plain text view to edit the transcript or replace a repeated term, then copy it or download TXT, DOCX or PDF. JSON also includes the returned word timing and other available transcription data.
If an M4A upload does not work
Check that the recording plays on your device, that the file is complete and that it is within the 100 MB upload limit. Changing another file’s extension to .m4a does not convert its contents. If a transfer was interrupted, obtain the original file again; if processing times out, retry with a shorter recording. An accepted extension does not confirm support for every encoding.
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Audio to text in three simple steps
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Let speech recognition work
The system detects language, speakers, words and sound events, then aligns them with timestamps.
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Review and export
Play it back, edit the text and download the format you need.
6 EXPORTS
One transcript, every useful format
Read along with the recording, copy clean text, or export files for documents, captions and your own workflow.
TXTDOCXPDFSRTVTTJSON
WHY AUDTEXT
Built for the work that starts with a recording
Word-level playback
Click any word to jump to its exact moment and follow the active phrase during playback.
Speakers and sound events
Different speakers are identified automatically, while events such as laughter or applause can be marked when detected.
Smart language detection
Automatic mode can recognize speech across 90+ languages; seven common languages also have manual presets.
Illustrative transcript text
00:06 — “Clear speech produces a transcript that is easier to review.”
00:12 — “Click any word to return to the matching moment in the recording.”
Accuracy tips
- Upload the original M4A instead of recording its playback again.
- Check the actual spoken language before starting; the webpage language may differ.
- Replay quiet or noisy passages before exporting names, dates and numbers.
Privacy and retention
Raw uploaded media is deleted after processing. Transcript text and technical request data may be retained in protected operational logs for service reliability, abuse prevention and support.
Privacy and retention →FAQ
Frequently asked questions
Do I need to convert M4A to MP3 first?+
No. AudText accepts M4A uploads directly. Use the original valid recording when possible; converting to MP3 does not improve speech that was already recorded with noise or compression.
Can I upload a phone voice memo?+
Yes, if you have the voice memo as a supported audio file such as M4A. Select the actual file from your device or computer. AudText’s upload form does not import a shared recording link.
What is the M4A file size limit?+
The upload limit is 100 MB per file. If your file is larger, prepare a smaller recording before uploading. Longer recordings may take more time to process; if you receive a timeout, try a shorter file.
Can I edit and download the M4A transcript?+
Yes. Edit the plain transcript, then copy it or download TXT, DOCX or PDF. JSON retains returned word data alongside the plain text. Changes in the plain text editor do not update word timing or the SRT and VTT caption text.
Why can an M4A file fail even when the extension is supported?+
The service still needs a valid, readable recording. Incomplete or damaged files and contents that do not match the extension may fail. An accepted .m4a extension alone does not confirm that the file can be decoded.
Is AudText really free?+
Yes. You can transcribe and download results without a subscription or account.
Which files can I upload?+
MP3, WAV, M4A, MP4, FLAC, AAC, OGG, OGA, OPUS, WebM, WMA, AVI, MKV, MOV, MPEG and MPGA are accepted up to 100 MB.
Which languages are supported?+
Automatic detection covers more than 90 languages. English, Spanish, Portuguese, German, French, Russian and Turkish can also be selected manually.
Are speakers and non-speech sounds detected?+
Speaker information is added automatically. Sound events such as laughter or applause may also appear when detected; structured details are included in JSON.
Can I create subtitles?+
Yes. Every result includes both SRT and VTT downloads with timestamps.
How accurate is the transcript?+
Accuracy depends on recording quality, background noise, compression, accents and overlapping speech. Verify important names, numbers and quotations against the recording.
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