MP3 to AIFF Converter
Convert MP3 audio to AIFF online for free. Fast, private MP3-to-AIFF conversion in a network-isolated sandbox - your audio is processed in memory and deleted the instant your download is ready.
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About Converting MP3 to AIFF
MP3 is the most universally compatible lossy audio format. It shrinks music to a fraction of its original size and plays on virtually every device ever made. When you need to move away from MP3, the usual reason is simple: lossy: discards audio detail.
Converting your MP3 audio file to AIFF solves that. AIFF is Apple’s uncompressed, lossless audio format — the Mac counterpart to WAV. It stores the full raw waveform, making it a studio standard for editing and mastering on macOS at the cost of large files. In practice you gain uncompressed, lossless quality and standard for editing on macos. PrivConvert runs the whole MP3-to-AIFF conversion in server memory and deletes your file the instant the AIFF is ready — nothing is stored, logged or reused.
When this conversion helps
- You need uncompressed, lossless quality
- You need standard for editing on macOS
- You need no encoding artifacts
- Sharing a MP3 audio file with someone whose software expects AIFF
Tips for best results
- AIFF preserves quality exactly, so the conversion from MP3 will not introduce any new compression artifacts.
- Files up to 250 MB are supported, and you can batch-convert several MP3 files at once; each is processed privately and deleted immediately.
How to Convert MP3 to AIFF Online
Turning a MP3 file into AIFF is straightforward here — upload, convert, download. The key change: AIFF stores data losslessly, so the conversion introduces no new compression artifacts.
Drag and drop your file into the upload area, click to browse your device, or paste a URL to a file hosted online. You can upload files up to 250 MB and batch convert up to 20 files at once.
Once uploaded, the conversion from MP3 to AIFF starts automatically. The process runs entirely in an isolated environment - your data never leaves the secure pipeline.
Your converted file is ready instantly. Click the download button to save it to your device. The file is deleted from memory immediately after download.
A more private way to convert MP3 files
Plenty of sites convert MP3 files. Very few promise never to keep them — PrivConvert does, and backs it up with how the service is built.
Convert instantly with no sign-up, no email and no profiling cookies. We never build a profile around you or the files you convert.
Runs in any modern browser on Windows, macOS, Linux, Android and iOS — no install, plugin or desktop software needed.
Each job runs in an isolated in-memory sandbox, so most conversions finish in seconds instead of waiting in a queue.
We never keep a copy. Once your AIFF is delivered, both the original and the result are gone — there is nothing left to leak or misuse.
MP3 vs AIFF - Format Comparison
| Feature | MP3 | AIFF |
|---|---|---|
| File extension | .mp3 | .aiff |
| Full name | MPEG-1 Audio Layer III | Audio Interchange File Format |
| Introduced | 1993 | 1988 |
| Compression | Lossy | Uncompressed |
| Encoding | Binary | Binary |
| Open standard | — | — |
| Supported by PrivConvert | Yes (as input) | Yes (as output) |
| Privacy-safe conversion | In-memory, zero storage | |
| Max file size | 250 MB per file | |
| Batch support | Up to 20 files simultaneously | |
Trusted by thousands of users
Professionals reach for PrivConvert when the audio file they are converting is sensitive and cannot be left sitting on someone else’s server.