Convert AAC to MP3

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

AAC and MP3 are both lossy formats, so flipping AAC to MP3 is really about compatibility: getting your audio into a shape the stubborn device or app will actually take. Where AAC struggles with older or stubborn hardware that only ever learned 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: AAC 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 AAC to MP3

AAC is MP3's better-trained successor: cleaner sound from the same number of bits. It was born in 1997, an MPEG all-star team: Fraunhofer, Dolby, Sony, AT&T and Nokia, and its real weak spot is older or stubborn hardware that only ever learned 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 AAC to MP3

1
Drop your AAC 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.

AAC vs MP3, side by side

	AAC	MP3
Born	1997, an MPEG all-star team: Fraunhofer, Dolby, Sony, AT&T and Nokia	1993, Fraunhofer Institute, Germany
Type	audio · lossy	audio · lossy
Best for	streaming-grade sound at friendly file sizes	playing on anything with a speaker, from new phones to twenty-year-old car stereos
Weak spot	older or stubborn hardware that only ever learned MP3	holding fine detail at low bitrates: it stays small by quietly discarding sound
Typical size	similar to MP3, but it sounds better at the same bitrate: or the same at about 25% smaller	about 1 MB per minute at 128 kbps: roughly a tenth of CD audio
Plays on	Apple everything, YouTube, Android, modern players; patchy on legacy gear.	Everything. Phones, browsers, cars, smart speakers, ancient iPods.

Questions people ask

Will converting AAC 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 AAC?

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 AAC behind: MP3 simply opens in more of the places that matter.

How long does AAC 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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