AAC .aac
A lossy audio format widely used in streaming and mobile devices.
AAC file format guideAAC to CAF converter
Convert AAC (.aac) to CAF for free. Choose files, review the available settings and download your results. No account needed.
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Core Audio Format .caf
Apple’s extensible audio container stores audio data alongside descriptive chunks. CAF can hold PCM or compressed sound and avoids the classic 4 GB WAV limit.
This workspace still applies its local memory/file limits. Tested output uses 16-bit PCM.
CAF file format guideHow to convert AAC to CAF
- Select AAC files from your device or drag them into the converter.
- Check the CAF output. Open conversion settings if you want to make adjustments.
- Convert, compare the original and result, then download your files.
Quality, compatibility and file limits
Choose the sample rate, trim range, and mono or stereo output. Compressed audio formats can discard detail; converting to a lossless format cannot restore sound already lost. Container support depends on the codec inside the file.
Processing uses your device when possible and our servers when required. Browser files are limited to 256 MB each; server conversions to 64 MB; browser spreadsheets to 32 MB. Previews show supported content and do not guarantee identical rendering in every application.