M4A to MP3 Converter – Free, Fast & Private
Convert iPhone voice memos and M4A audio to MP3 locally in your browser — recordings never leave your device
How to convert M4A to MP3
Choose or drag in your M4A file — nothing is uploaded, it stays on your device.
Conversion starts instantly — the audio is extracted and encoded to MP3 right in your browser, with live progress.
Download your MP3 file.
About M4A to MP3 conversion
M4A is what iPhones, Macs and Apple Music produce — Voice Memos, GarageBand exports, iTunes rips. It sounds great on Apple devices, but plenty of car stereos, older players, transcription services and web forms still want MP3.
This converter turns M4A (and raw AAC) into standard MP3 entirely in your browser. Voice memos are often private — interviews, therapy notes, personal reminders — and here they are never uploaded anywhere.
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Frequently asked questions
Share the voice memo to Files (or AirDrop it to your computer), then drop the .m4a file into the box above. It converts to MP3 in your browser and you can save it right back — on iPhone the download goes through the share sheet.
M4A is an Apple-flavored container for AAC audio. Many non-Apple apps, older car stereos and upload forms only recognize MP3. Converting produces a file that works everywhere without asking questions.
Voice memos are recorded at modest bitrates, and the 192kbps MP3 output preserves speech transparently — a converted memo is indistinguishable from the original in normal listening.
No. The conversion runs entirely in your browser using WebAssembly (FFmpeg). Your recording never leaves your device — that is also why there is no upload wait, no queue and no file-size pricing. For personal recordings, lectures and meetings this matters more than anywhere else.
Up to 8GB on desktop browsers and 2GB on mobile — big enough to pull the audio out of a multi-hour lecture or meeting recording. There is no limit on the number of files, no signup and no watermark.
192kbps, which is transparent for speech and very close to transparent for music. The audio stream is decoded once and encoded once — there is no extra generation loss from server-side re-processing.
Yes — completely free and unlimited, with no watermark, signup or daily quota. Because the conversion runs on your own device instead of our servers, there are no processing costs to charge for.
Yes. It runs in any modern browser — Chrome, Safari, Edge or Firefox — on Windows, macOS, ChromeOS, Linux, iOS and Android. There is nothing to install.
Audio-only work is fast: there is no video to re-encode, so even the soundtrack of a long video converts in well under real time. Files whose audio is already MP3 are rewrapped without re-encoding and finish in seconds.