M4A to MP3
Turn M4A to MP3 for Windows, Android, car stereos and MP3-only upload forms. Free, unlimited, no sign-up, and the file is converted in your browser.
Your file is converted in your browser and never uploaded to our servers.
How to convert M4A to MP3
Three steps, all inside this tab. The audio is read from your disk and never sent anywhere.
- 1
Choose the .m4a or .m4b file
Drag it onto the box or tap to browse in File Explorer, Finder or the Files app. Song exports, recordings and audiobook files all open here.
- 2
Set the bitrate for the source
MP3 at 192 kbps is preselected. Spoken word sounds right at 128 kbps; songs bought from the iTunes Store deserve 320.
- 3
Convert and save the MP3
The first conversion downloads the converter once, about 9 MB, and later files skip it. The name stays, so 04 Blue Hour.m4a saves as 04 Blue Hour.mp3.
Why this M4A to MP3 converter
Your library stays on your machine
FFmpeg, compiled to WebAssembly, runs in the browser and opens the file read-only. Many online converters upload your audio and keep it on their servers for hours; this one has no server copy to delete.
No meter on a big job
Free with no daily cap, no account, no email and no watermark. Work through a playlist of exports one track at a time.
The sound's shape is kept
Sample rate and channel count come from the source. Only files above 48 kHz are resampled, because that is the MP3 format's ceiling.
Tested on real AAC files
In our 2026-10-24 test runs, AAC .m4a files converted to valid MP3s that played normally. A file with no audio track gets a clear message, not a silent MP3.
Best way to change M4A to MP3: four routes compared
Each route fits a different job. Pick by how many files you have and where they live.
| This browser tool | Apple Music or iTunes (Create MP3 Version) | Upload converter sites | VLC | |
|---|---|---|---|---|
| Where the audio goes | Stays on your device | Stays on your computer | Sent to their servers | Stays on your computer |
| Install | None | Built into Mac; iTunes on Windows | None | Free download |
| Whole library at once | No, one file at a time | Yes, select many tracks | Often, within a size cap | Yes, but fiddly |
| Works on a phone | Yes, in the browser | No | Yes | No converting on mobile |
| Protected .m4p songs | Can't convert | Can't convert | Can't convert | Can't convert |
| Best for | A few files on any computer or phone | Converting hundreds of songs on a Mac | Files already in cloud storage | Users who already have it installed |
Apple audio that needs MP3 to travel
Where the M4A came from decides the bitrate worth picking.
A voice memo sent to a Windows PC
Shared from an iPhone, the recording arrives as .m4a and some Windows apps and older players won't open it. A 128 kbps MP3 keeps every word.
iTunes purchases on a car USB stick
DRM-free iTunes Store songs are 256 kbps AAC. Convert them at 320 kbps so the stereo that ignores .m4a gets the full quality the file has.
A GarageBand bounce for a contest form
Song contests, school portals and demo inboxes often accept MP3 only. Export at 320 kbps, or go back to GarageBand and share as MP3 if you still have the project.
Podcasts and audiobooks for an old player
Clip-on MP3 players and many older units skip .m4a and .m4b entirely. Speech needs no more than 128 kbps, which keeps long books compact.
Songs moving to an Android phone
Recent Android music apps play M4A, but some older phones, smartwatches and kids' devices only list MP3. One conversion settles it.
Recordings for a client or colleague
An interview or a lesson recorded on an iPhone opens on any laptop as MP3, with no question about which player to install.
Protected iTunes songs and Apple Music downloads
Some Apple audio cannot be converted at all. Songs bought from the iTunes Store before 2009 were often sold with FairPlay copy protection and carry the .m4p extension. Tracks downloaded through an Apple Music subscription are protected in the same way. The audio inside is encrypted, so no converter that respects the protection can decode it, including this one.
To check a file, open Get Info in Apple Music or iTunes and look at Kind. "Protected AAC audio file" or "Apple Music AAC audio file" means it is locked. "Purchased AAC audio file" or plain "AAC audio file" is DRM-free and converts normally. For a locked song you own, Apple's iTunes Match service can replace it with an unprotected copy.
Before you convert .m4a files to MP3
- Check Kind in Get Info before an M4A to MP3 conversion, so you don't spend time on a protected track.
- On a Mac, select the song in Apple Music and use File, Show in Finder to locate the actual .m4a.
- On an iPhone, save a voice memo with Share, Save to Files so the browser can pick it.
- Look at the title, artist and artwork after converting; we haven't verified that tags carry over, so re-tag if your stereo shows a blank.
- Expect an audiobook to come out as one long MP3, since we haven't tested whether chapter marks survive.
- Use a desktop browser for multi-hour audiobooks, because phones with little memory can fail on very large files.
M4A to MP3 mistakes worth avoiding
Mistake: Renaming track.m4a to track.mp3 for the car.
Do this instead: The file is still AAC inside an MP4 container. A player that checks the contents rejects it; it must be encoded as MP3.
Mistake: Converting the MP3 back to M4A for your iPhone later.
Do this instead: That is a third lossy pass. Keep the M4A for Apple devices and use the MP3 only where it is needed.
Mistake: Picking 320 kbps for a voice memo.
Do this instead: A phone recording of speech holds nothing that 128 kbps can't carry. The bigger file just fills the stick sooner.
Mistake: Hunting for a tool that strips protection from old .m4p songs.
Do this instead: Such tools are often unsafe. See whether iTunes Match or a re-download from your purchases gives you a DRM-free copy.
Privacy, cost and honest limits
No upload, no server copy
Cloudflare serves the page and jsDelivr delivers the open-source FFmpeg files. Your audio goes to neither; it is encoded on your device.
Free and unlimited
No quota, no paid tier, no sign-up and no watermark in the MP3.
What we haven't promised
One file at a time. Our tests used AAC .m4a files, not Apple Lossless. We haven't measured a maximum file size or verified that tags, artwork or chapters carry over.