Convert M4A to MP3 — free, right in your browser
Voice Memos, iTunes purchases, and recorder apps love M4A — car stereos, older players, and editing software do not. Turn any M4A file into an MP3 that plays everywhere, locally and without uploading it.
Good to know
- Price
- Free — no premium tier, no watermark
- Account
- None — no sign-up, nothing to install
- Your files
- Processed on your device only — never uploaded
- Multiple files
- One file at a time
- Formats
- M4A → MP3
How it works
Drop your M4A file
Drag your .m4a file into the box, tap to browse, or paste it — a Voice Memo, a song, any M4A recording.
Pick your quality
128 kbps is plenty for voice, 192 kbps is a good all-round choice, and 320 kbps keeps the most detail for music.
Download your MP3
The audio is re-encoded on your device and saved as an MP3 with its title and artist metadata carried over when present.
Why use this tool
- Plays everywhere afterwards — cars, older players, presentation and editing software
- Your recordings never leave your device: conversions are 100% local
- Three bitrate choices, from voice-light to music-full
- No account, no watermark, no waiting queue
About the M4A format
M4A is the audio format Apple's ecosystem settled on: iPhone Voice Memos record in M4A, iTunes and Apple Music downloads use it, and many recorder apps export it. It is technically excellent — the same AAC encoding used by streaming services — but it is an Apple-centric world: plenty of car stereos, older MP3 players, game consoles, presentation tools, and audio editors still cannot open .m4a files, or import them badly.
About the MP3 format
MP3 is the universal audio format: after more than two decades, there is effectively no device or program that refuses it. Converting re-encodes the AAC audio inside your M4A as MP3 at the bitrate you choose, and carries over the title and artist metadata when the source file has it. One honest note: both formats are lossy, so a conversion is never an upgrade — pick 320 kbps for music you care about, and keep the original M4A as your archive copy.
Frequently asked questions
Why won't my M4A file play in my car or my software?
Because M4A support is far from universal: many car stereos, older players, and editing or presentation programs only accept MP3 (sometimes only from USB, with strict rules). Converting the file to MP3 removes the compatibility question entirely.
Which bitrate should I choose?
For voice recordings and memos, 128 kbps is clear and keeps files small. For music, 192 kbps is the balanced default, and 320 kbps preserves the most detail — worth it for songs you plan to keep. Bitrates above the quality of the source do not add anything real, they just make bigger files.
Is my recording uploaded to a server?
Never. The converter runs entirely in your browser using WebAssembly (FFmpeg). Your audio is decoded and saved on your own device; nothing is transmitted, stored, or heard by us — which matters for voice memos and interviews.
Can I convert a Voice Memo from my iPhone?
Yes. In the Voice Memos app, share the recording and save it to Files, then drop that .m4a file here. It converts on your phone, in this browser, and you get back a standard MP3 you can send or play anywhere.