MP3 to AAC
Convert MP3 audio into AAC format for modern playback devices.
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Quick Tip
Select the .mp3 file.
About This Tool
Why use MP3 to AAC?
Re-encode an MP3 as AAC at 192 kbps. FFmpeg runs in your browser using its native AAC encoder, producing the format Apple devices, iTunes, YouTube and most streaming platforms use by default.
AAC is a genuinely better codec than MP3 — at the same bitrate it holds up better, particularly on high frequencies and cymbals, which is why it replaced MP3 as the default nearly everywhere. The important caveat is that this is a second lossy encode: the MP3 already discarded detail and the AAC encoder now works from what survived. It cannot recover anything. If you have the original WAV or FLAC, encode from that instead; convert an MP3 only when the original is genuinely gone and something requires AAC.
Key Benefits
192 kbps AAC
Comfortably transparent for the format, and the bitrate most streaming platforms use for their standard tier.
Apple and streaming native
AAC is what iTunes, Apple Music, YouTube and most streaming services use, so no further conversion is needed downstream.
Converted locally
FFmpeg runs in the browser, so your library is not uploaded to a conversion service.
How to use MP3 to AAC
- 1
Select the .mp3 file.
- 2
Convert; the audio is decoded and re-encoded as AAC at 192 kbps.
- 3
Download the .aac file.
- 4
Use your original master instead if you still have one — a single encode always beats two.
Best use cases
Meet a platform requirement that specifies AAC.
Prepare audio for an Apple-centric workflow.
Produce the audio track for a video project that expects AAC.
Convert a legacy MP3 when the original master no longer exists.
MP3 to AAC FAQs
Will converting to AAC improve my MP3?
No. This is a second lossy encode on top of the first. AAC is the better codec, but it cannot recover what MP3 already discarded. Encode from the original if you still have it.
Is AAC better than MP3?
Yes, at the same bitrate — it holds up noticeably better on high frequencies and cymbals. That is why it replaced MP3 as the default on most platforms.
Will the file play everywhere?
On anything from roughly the last fifteen years, yes. MP3 still has a small edge on genuinely ancient hardware.
What bitrate is used?
192 kbps, which is comfortably transparent for AAC and matches the standard tier of most streaming services.
Related Audio Tools
More free audio tools that work well alongside mp3 to aac.