Convert CAF to MP3
Convert any audio file to MP3 format online for free. Fast, secure, and easy-to-use audio to MP3 converter with no software installation required.
Drag & Drop Audio File
or click below to browse
Supported formats (Max 50MB, 30 min • Sign in for 200MB, 1 hr)
Why Choose Scriptivox CAF to MP3 Converter?
Fast Conversion
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Your files are encrypted and automatically deleted after conversion. We never store or share your data.
No Installation
Works directly in your web browser. No software download or installation required.
How to Use CAF → MP3
Upload File
Drag and drop your CAF file or click to browse. Supports files up to 1GB.
Convert
Select MP3 as your output format and click convert. Our servers will process your file instantly.
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Download your converted file instantly. The download link expires in 1 hour for security.
CAF vs MP3: format comparison
How the two formats differ on the things that change your result.
| Specification | CAF (source) | MP3 (result) |
|---|---|---|
| Container | Core Audio Format | MPEG-1/2 Audio Layer III |
| Developed by | Apple | Fraunhofer IIS / MPEG |
| Introduced | 2005 | 1993 |
| Audio codecs | PCM, ALAC, AAC, Opus | MP3 |
| Compression | Depends on codec | Lossy |
| Max sample rate | 192 kHz | 48 kHz |
| Max channels | 8 | 2 |
| Gapless playback | Yes | Partial |
| Metadata / tags | CAF metadata chunks | ID3v2 |
| Approx. file size | 1–32 MB per minute | 0.96–2.4 MB per minute |
| Licensing | Proprietary | Patents expired |
| Plays natively on | Native: macOS, iOS · Needs a player: Windows, Web browsers | Native: Web browsers, Windows, macOS, iOS, Android, Smart TVs |
| Best for | iOS development, the Apple ecosystem, very long recordings | music libraries, podcasts, sharing with anyone |
What changes when you convert CAF to MP3
Core Audio Format is a container rather than a single codec, so what it holds depends on how the file was made. It can carry PCM, ALAC, AAC, Opus, which means two files with the same extension can differ in quality and size. Check the source before assuming which one you have.
If your source runs above 48 kHz, it will be resampled: MP3 cannot store the 192 kHz that CAF allows.
CAF supports up to 8 channels, MP3 up to 2. Surround material is folded down rather than carried through untouched.
Compatibility is the main win here: MP3 plays natively on 4 more of the platforms we track than CAF does, so the result works without asking anyone to install a player.
The two formats are aimed at different jobs. CAF is typically used for iOS development, the Apple ecosystem, very long recordings, while MP3 is the usual pick for music libraries, podcasts, sharing with anyone. That difference in intent is what most of the specification gaps above come from.
About CAF to MP3 Conversion
This page converts CAF files, stored in the Core Audio Format container since 2005, into MP3, which uses MPEG-1/2 Audio Layer III and dates from 1993. The differences between the two containers decide what changes in the result.
CAF comes from Apple and dates to 2005. It carries PCM, ALAC, AAC, Opus, which is what determines the quality ceiling of anything you convert out of it.
MP3 was introduced by Fraunhofer IIS / MPEG in 1993. It carries MP3 and has native playback on 6 of six platform categories, which is the practical reason to choose it as a target.
After converting your file, you can use Scriptivox transcription services to convert your audio to text. Perfect for meetings, interviews, podcasts, and more.
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