M4A to text
Transcribe an M4A recording, such as an iPhone voice memo, to text you can copy or download. Free, with no upload.
Drop an M4A or voice memo to transcribe it
The speech is recognized on your device, so nothing is uploaded and there's no limit on length.
MP3, M4A, WAV, FLAC, and other audio, or a video with sound.
How to convert M4A to text
Voice memos from an iPhone are M4A files. Open one here and Mastershot writes down what's said, in paragraphs, with times if you want them. Copy it, or save it as a TXT, SRT, or VTT file. The recording never leaves your device.
Step 1
Choose your M4APick a voice memo or other recording.Step 2
Transcribe itThe speech is written down on your device.Step 3
Copy or downloadSave the transcript as TXT, SRT, or VTT.
What to expect
- Supported inputs
- M4A recordings, and any other recording or video this browser can read.
- What happens
- Whisper, a speech recognition model, listens to the recording on your device and writes down each word with its time.
- Limits
- The first time, the browser downloads the 77 MB speech model and keeps it. Transcribing takes about a sixth of the recording's length, so a 30-minute memo takes about 5 minutes.
Private by design
Your video stays on your device
Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.
- No upload
- No signup
- No watermark
Questions
Share the memo to Files, or AirDrop it to your computer, then open the M4A here and select Transcribe.
No. The speech is recognized in your browser, so the memo and its transcript stay on your device.
Yes. Paragraphs start where the talk pauses, and you can add the time each one starts. It doesn't say who is speaking.