Convert M4A to MP3

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Converting M4A to MP3 is free: drop your M4A above, hit convert, and download the MP3. Files delete themselves within an hour.

M4A and MP3 are both lossy formats, so flipping M4A to MP3 is really about compatibility: getting your audio into a shape the stubborn device or app will actually take. Where M4A struggles with older Windows software and stubborn car stereos that expect a .mp3, MP3 earns its keep: it's built for playing on anything with a speaker, from new phones to twenty-year-old car stereos.

FYI

Small print: M4A and MP3 are both lossy, so every re-encode shaves off a little more. Convert once, from the best source you have: not repeatedly.

Why flip M4A to MP3

M4A is AAC in Apple's favorite outfit: the audio-only MP4 your iPhone speaks natively. It was born in 2003, popularized by Apple's iTunes Store, and its real weak spot is older Windows software and stubborn car stereos that expect a .mp3.

MP3 is the format that taught music to travel: small, scrappy, and welcome absolutely everywhere. MPEG-1 Audio Layer III. Perceptual coding: it throws away the parts of the signal your ear is least likely to miss. That makes it the right destination when what you need is playing on anything with a speaker, from new phones to twenty-year-old car stereos.

How to convert M4A to MP3

1
Drop your M4A file into the flipper above, or click to browse for it.
2
Check the output format: MP3 is already selected for you.
3
Hit Convert, give it a moment, then download your new MP3.

M4A vs MP3, side by side

	M4A	MP3
Born	2003, popularized by Apple's iTunes Store	1993, Fraunhofer Institute, Germany
Type	audio · lossy	audio · lossy
Best for	sounding great anywhere in the Apple ecosystem	playing on anything with a speaker, from new phones to twenty-year-old car stereos
Weak spot	older Windows software and stubborn car stereos that expect a .mp3	holding fine detail at low bitrates: it stays small by quietly discarding sound
Typical size	like AAC: better-than-MP3 sound at about 1 MB per minute	about 1 MB per minute at 128 kbps: roughly a tenth of CD audio
Plays on	iPhone, Mac and iTunes natively; most modern Android and Windows apps too.	Everything. Phones, browsers, cars, smart speakers, ancient iPods.

Questions people ask

Will converting M4A to MP3 lose quality?

A small amount: both formats are lossy, so re-encoding trims a little detail. Converting once at a decent bitrate keeps it inaudible for most ears.

Will the MP3 file be bigger or smaller than my M4A?

In the same neighborhood: MP3 runs about 1 MB per minute at 128 kbps: roughly a tenth of CD audio, and you control the bitrate.

Where will the MP3 file play?

Everything. Phones, browsers, cars, smart speakers, ancient iPods. That's the usual reason people leave M4A behind: MP3 simply opens in more of the places that matter.

How long does M4A to MP3 conversion take?

Seconds for most files: audio is light work. A long recording might take a minute; your file auto-deletes from our servers within an hour either way.

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