M4A to text, free in your browser — no sign-up, no email gate

How to convert M4A to text in three steps

No install, no export queue, no download link sent to your inbox. The whole conversion happens on this page.

1. Upload your M4A file. Click the transcriber above and pick the file — up to 5 minutes and 20 MB on the free tier. Voice Memos from an iPhone work as-is; there is no need to convert to MP3 first.
2. Pick a language, or leave auto-detect on. The model recognizes 40 locales and even follows along if the recording switches languages midway.
3. Copy or download your text. The transcript arrives as punctuated, capitalized plain text. Copy it to the clipboard or save it as a .txt file.

What is an M4A file, and why your iPhone keeps making them

M4A is an MPEG-4 audio container, usually holding AAC-encoded sound. Apple made it the default for Voice Memos on iPhone and iPad, which is why most people first meet the format the moment they try to transcribe an interview, lecture, or meeting recorded on their phone.

GarageBand exports, QuickTime audio recordings, and plenty of Android recorder apps produce M4A too. The format compresses speech efficiently, so a five-minute memo is usually only a few megabytes — comfortably inside the 20 MB upload limit here.

To get a Voice Memo off your iPhone: open Voice Memos, select the recording, tap the share icon, then AirDrop it to a computer or save it to the Files app. Upload that file above and you are done.

Why use this M4A to text converter

Many of the tools ranking for this search make you register before you can read your own transcript, or email you a gated download link after a wait. This page does neither. The transcriber sits on the first screen, works without an account, and shows your text as soon as the model finishes.

Under the hood is Nemotron 3.5 ASR, NVIDIA's 0.6B-parameter cache-aware FastConformer-RNNT streaming model. It is compact enough to return results quickly and accurate enough for interviews and notes you actually intend to quote.

One thing to be clear about: nemotronasr.com is an independent site built on NVIDIA's model. It is not an NVIDIA product and is not affiliated with or endorsed by NVIDIA.

40 languages, detected automatically

Leave the language selector on auto and the model identifies what is being spoken. It supports 40 locales, including English (US and UK), Spanish, French, German, Portuguese, Italian, Japanese, Korean, Hindi, Arabic, Russian, Turkish, Vietnamese, Thai, and Mandarin Chinese.

Detection also survives code-switching: if a memo starts in English and drifts into Spanish, the transcript follows. For a file you know is single-language, picking the locale manually is a small extra step that removes the guesswork.

Four speed and accuracy modes

The transcriber exposes the model's chunk size as four presets. Larger chunks give the model more context per pass; smaller chunks return text with less waiting.

Free limits, stated plainly

There is no trial that quietly converts into a subscription, and no watermark on your text. If the free tier covers your usage, use it forever.

• 3 transcriptions per day per connection — no account needed, the counter resets daily.
• Up to 5 minutes and 20 MB per file. Split longer recordings before uploading.
• Output is plain punctuated text: copy it, or download it as a .txt file.
• Need more volume? Pro is $9/month for 300 audio minutes, activated with a Creem license key on up to 3 browsers.

What this M4A to text conversion does not include

Several competing tools advertise speaker detection and subtitle export. Being upfront about the boundary saves you a wasted upload:

• No speaker diarization — the transcript does not label who said what.
• No word or segment timestamps, and no SRT or VTT subtitle export. If subtitles are the goal, see the audio to SRT guide linked below.
• No video files — extract the audio track first, then upload the audio.
• No batch uploads and no public API; files are processed one at a time.
• Transcription runs after the upload or recording completes. This is not a live caption overlay.

Privacy: what happens to your M4A file

Your file is uploaded over an encrypted connection, transcribed, and the text is returned to your browser. Audio is processed only to produce your transcript — it is not used to train models.

Because there is no sign-up, there is also no profile linking your recordings together, no marketing list your email lands on, and no account database holding a history of what you transcribed.