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Convert AU to CAF
Convert AU to CAF format — 100% browser-based, no upload required.
2 cores · low tier
Drop a file here or click to select
Format will be auto-detected
About these formats
Source
AU
Sun/NeXT AudioSimple audio format from Sun Microsystems. Originally used in Unix systems and Java audio. Typically stores µ-law compressed audio.
Best for
Unix/Java audioLegacy systemsSimple audio storage
Advantages
- + Simple format
- + Java support
- + Compact for telephony
Limitations
- − Outdated
- − Low quality
- − Limited use
Target
CAF
Core Audio FormatApple's flexible audio container supporting any codec. Designed to overcome limitations of older formats like AIFF and WAV.
Best for
macOS/iOS audioProfessional audioApple development
Advantages
- + Any codec
- + No size limits
- + 64-bit offsets
- + Apple native
Limitations
- − Apple-only
- − Limited third-party support
- − Niche format