Transcribe M4A to text
Upload the .m4a straight from your phone or Mac — no converting to MP3 first — and get clean, editable text in seconds. Free to start.
By Anubhav Jain, Trustample founder · Updated July 2026 · Claims verified against the live product
Free: 60 min per 30 days, files up to 30 min / 50 MB · Paid plans: 10 to 100 hrs, files up to 2 GB. Big video? Upload just its audio track — same transcript, much faster upload.
Encrypted in transit · audio & video auto-delete in 30 days · never used to train AI
Optional settings
Set this for the most accurate result on quiet or mixed audio.
Get a second copy translated into another language (Pro).
Uncommon words the AI might misspell — list them so they come out right.
Skip the step most people waste time on: you do not need to convert an M4A into MP3 or WAV before transcribing it. M4A is just AAC audio in an MP4 container, and speech recognition reads it directly. Any guide telling you to convert the file first is adding a lossy, pointless detour — drop the .m4a in as it is.
M4A is everywhere because Apple made it the default: every iPhone and iPad Voice Memo is an M4A, QuickTime audio recordings are M4A, Zoom saves its local audio-only track as M4A, and plenty of Android recorders produce them too. If you recorded a meeting, lecture, interview or a note to yourself in the last few years, an .m4a is probably what you're holding.
Transcribing M4A to text is free to start: 60 minutes a month, files up to 30 minutes each, TXT export, no credit card. Longer recordings and DOCX/PDF/SRT/VTT exports are where the paid plans begin — but for a stack of voice memos, the free tier is the whole job, not a teaser.
How it works
- 1Drop the .m4a straight in — from Files, Finder, or AirDrop. No conversion needed.
- 2The AI transcribes it with punctuation — usually seconds for a short memo.
- 3Click any word to fix it, then copy the text or export a document.
Frequently Asked Questions (FAQs)
Do I need to convert M4A to MP3 first?
No — and converting first actively costs you. M4A is a container holding AAC audio, which the transcription engine reads natively. Re-encoding to MP3 is lossy, slower, and gains you nothing: identical transcript, extra step. Upload the original.
Can I transcribe M4A to text for free?
Yes — 60 minutes a month, files up to 30 minutes each, TXT export, no card, same engine and synced editor paid users get. It renews every 30 days. Files over 30 minutes, or exports beyond plain text, need Basic ($12/mo) or Pro ($19/mo).
How do I get a Voice Memo off my iPhone?
In the Voice Memos app, tap the memo → share icon → save to Files, AirDrop it to your Mac, or email it to yourself. Then upload the .m4a. You can also skip the transfer entirely: open Trustample in Safari on the phone and upload straight from Files — the whole flow works on mobile, no app install.
How do I transcribe an M4A on a Mac?
Upload it in any browser — macOS dictation types what you speak into the microphone, so it can't take an existing file. Drag the .m4a from Finder into the upload box and the transcript comes back in the same tab. Same for Windows.
My memo is a conversation. Can it label who's speaking?
Yes, on every paid plan: when the recording has more than one voice, segments arrive labeled Speaker 1, Speaker 2 and so on, and you can rename them — the label updates through the whole transcript. Talk-time stats come with the labels; the AI-written speaker insights summary is the Pro extra.
What if my M4A is a long meeting or lecture?
Free covers files up to 30 minutes. Basic handles up to 3 hours, Pro up to 6 hr 40 min or 2 GB. If you're on free with a 60-minute recording, splitting the file in two with any free audio editor works — or upgrade, which is what the plans are for.
Are voice memos private after upload?
Yes — encrypted storage, no AI training on your recordings, 30-day auto-delete, instant manual delete, and an optional paranoid mode that erases the recording immediately after transcription.
Related tools
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