AAC to MP3

AAC in. MP3 out.

On-device. Instantly.

Drop your audio file here

or tap to browse

No upload
Works offline
No idea what's in your audio

Need to convert many audio files? The offline bundle handles batch conversion with no limits. $49 once.

Get Bundle →

Three steps. Zero uploads.

01
Drop
Drop your AAC file into fwip.
02
Convert
fwip converts AAC to universal MP3 in your browser using WebAssembly.
03
Download
Download the MP3. Compatible with every device, car stereo, and media player.

Convert audio without uploading it.

AAC is the default format for Apple devices — great on iPhone, but less compatible elsewhere. fwip converts to MP3 entirely in your browser. No server, no upload, no account.

fwip works differently. The processing engine runs entirely in your browser. Your AAC is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

Use it free in your browser. Own it offline for $15. Convert any audio format, anywhere.

fwip vs the rest.

fwipAdobe AuditionOnline Audio ConverterCloudConvert
Upload requiredNoNo (desktop)YesYes
Account requiredNoYesNoFree tier
Price$15 / tool$23/mo ($276/yr)Free (ad-supported)Free (25/day) / $9/mo ($108/yr)
Files leave deviceNeverNoYesYes
Works offlineYesYesNoNo
Batch processingOffline bundleYesLimitedYes

Frequently asked.

How do I convert AAC to MP3?
Drop your AAC (.m4a or .aac) file into fwip. It converts to MP3 in your browser. Download the result.
Is my audio file uploaded?
No. Conversion runs entirely in your browser using WebAssembly. Your audio file never leaves your device.
What is AAC?
AAC (Advanced Audio Coding) is the default format used by Apple devices, iTunes, and the App Store. It offers good quality at small file sizes but is less universally supported than MP3.
Will quality be preserved?
Both AAC and MP3 are lossy formats. Transcoding will not degrade quality significantly if your AAC file has a similar or higher bitrate than the target MP3.
Can I convert offline?
Yes. The offline version ($15, one payment) works without internet — useful for secure environments or when processing sensitive recordings.

Like it? Own it.

Offline. No browser. No internet. No excuses.
$15
This tool
  • AAC to MP3 · offline
  • Batch processing
  • No file size limit
  • 3 devices · one payment
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$49
Audio bundle
  • All audio tools · offline
  • Batch processing
  • No file size limit
  • 3 devices · one payment
Get Audio bundle →