Transcribe M4A

Transcribe M4A files, straight from your iPhone

Upload an M4A, the format Voice Memos and screen recordings use, and get a clean, speaker-labeled transcript in minutes. No conversion needed, 95%+ accuracy on clear audio. Test the quality free on your first 10 minutes. See the live accuracy benchmark.

Transcribe an M4AFirst 10 minutes free. No credit card.

Hear it, read it, at the same time

A real transcript synced to its audio. Press play, or click any word to jump to that moment. Your M4A works the same.

Sample preview
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Interviewer:Thanks for making the time. So to start, tell me a little about what you do and how you got here.

Guest:Sure. Um, so I run a small coffee roastery in Amsterdam, just east of the Oosterpark. We roast, uh, twice a week, and we supply about thirty cafes around the city. Before this, I was an accountant, which, you know, surprises people.

Interviewer:An accountant. That's quite a jump. What made you leave?

Guest:Honestly, it wasn't one big moment. I'd been doing the books for a cafe client, and I kept staying after the work was done, just asking about the machines, the beans, all of it. At some point, the owner said, "Well, if you're gonna hang around anyway, learn to roast." And that was it. I, I couldn't stop thinking about it after that.

Interviewer:So when did it become a real business?

Guest:About six years ago. We started with a tiny five-kilo machine in a shed. First year, we lost money. Second year, we broke even. And, um, by the third year, we could pay two salaries. Now there are seven of us.

Interviewer:Seven people. Is there a coffee you're especially proud of?

Guest:Yeah. There's a lot from Huehuetenango in Guatemala that we've bought from the same family for four seasons now. When it lands each spring, it's, uh, it's a bit like a harvest festival in here. Everyone stops to cup it together.

Interviewer:And what's been the hardest part of growing?

Guest:Hiring, without a doubt. I mean, roasting, you can learn. The machines are honest with you. But finding people who care about the boring parts, the cleaning, the logging, the consistency, that's rare. We got it wrong twice before we got it right.

Interviewer:What does a normal Tuesday look like for you these days?

Guest:Earlier than you'd think. The roaster gets switched on at seven because it needs a, a good forty minutes to warm up. Mornings are production. Afternoons are the unglamorous half: packing orders, answering wholesale emails, calibrating the grinders. And honestly, twice a week, I still do the deliveries myself on the cargo bike. You hear things from cafe owners that never make it into an email.

Interviewer:Is there a mistake from the early days that still makes you wince?

Guest:Oh, plenty. The worst one, we once shipped a whole batch that I'd roasted a full minute too short. It tasted like, um, like grass and peanuts. A customer called and asked very politely whether we were okay. We replaced everything, and I printed that invoice and hung it above the roaster. It's still there.

Interviewer:Last one: What would you tell someone who's sitting where you were in the office thinking about it?

Guest:Don't romanticize it. The first winter, I was loading sacks at six in the morning wondering what I'd done. But, like, if a thing keeps pulling at you for years, that's information. You can go back to spreadsheets. You can't go back in time.

Interviewer:That's a good place to end. Thank you.

Guest:Thanks for having me.

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What to know about M4A

M4A is what your iPhone records

Voice Memos, screen recordings, and many call-recording apps all save M4A (AAC audio in an MP4 container). If you recorded it on an iPhone, it's almost certainly an M4A. Send the file straight here, no export gymnastics. M4A is one of the formats the audio to text tool handles, alongside MP3, WAV and the rest.

Should you convert M4A to MP3 first?

No. Converting M4A to MP3 is lossy-to-lossy: it can only make the audio slightly worse, never better. FileToText reads M4A natively, along with WAV, MP3, AAC and most video formats, so skip the converter entirely.

How do you transcribe an iPhone Voice Memo?

Open Voice Memos, tap the recording, tap the three dots, choose Share, and save it to Files, then upload it here. You get a speaker-labeled, timestamped transcript with exports and a synced player. Recording interviews on your phone? The interview page goes deeper on multi-person audio.

M4A transcription at a glance

FormatM4A (AAC audio in an MP4 container)
Typical sourceiPhone Voice Memos, screen recordings, call-recording apps
Conversion neededNone, FileToText reads M4A natively
Best exportsTXT, DOCX, SRT, WebVTT
Max length20 hours per file
Free previewFirst 10 minutes of any file

M4A transcription FAQ

Updated July 2026
Upload the M4A straight from your iPhone (in Voice Memos, tap the recording, tap the three dots, choose Share, and save it to Files), and FileToText returns a speaker-labeled, timestamped transcript in minutes. Do not convert it to MP3 first: that is lossy-to-lossy and can only make the audio slightly worse. FileToText reads M4A natively, along with WAV, MP3, AAC and most video formats. The first 10 minutes of any file are free; after that it is $3 per audio hour, billed per started hour, up to 20 hours per file. An M4A transcribes just as accurately as an MP3, because the container and codec barely matter next to how clearly the speech was recorded: 95%+ on clear audio, lower with noise or crosstalk. Export the transcript as TXT, DOCX, SRT, or WebVTT. See the live monthly benchmark →
M4A is Apple's default: iPhone Voice Memos, screen recordings, and a lot of call-recording apps all save M4A (AAC audio in an MP4 container). If you recorded something on an iPhone, it's almost certainly an M4A.
No, and you shouldn't. Upload the M4A directly. Converting M4A to MP3 is lossy-to-lossy, so it can only make the audio slightly worse. FileToText reads M4A natively.
Open Voice Memos, tap the recording, tap the three dots, choose Share, and save it to Files or send it to your computer. That file is an M4A. Upload it here and you're done.
Yes. The container and codec barely matter; what matters is how clearly the speech was recorded. A clean Voice Memo transcribes as well as a clean MP3. 95%+ on clear audio, lower with noise or crosstalk.