Convert MP3 to AIFF online
Free, no sign-up, no limits. Drop your MP3 files, get AIFF files back in seconds.
1 files converted so far
Drop your MP3 files here
or · multiple files accepted
Local conversion: your files never leave your device.
Why convert MP3 to AIFF?
Heads up: going from MP3 (compressed) to AIFF (lossless) does not restore the quality that was lost. It is useful for importing the file into editing or transcription software or a sampler that requires AIFF, not for "improving" the sound.
How to do it, step by step
- Drop your MP3 fileinto the area at the top of the page (or several files at once). On mobile, tap the area and pick the file from your apps.
- Check the output format: AIFF is already selected. AIFF is a lossless format: there is no quality setting, the sound is reproduced identically. The file will be noticeably larger than a compressed format.
- Start the conversion.The FFmpeg engine loads once (≈ 10 MB), then each file is processed in a few seconds without leaving your device.
- Download your AIFF, directly or as a .zip if you converted several files. The name and metadata (title, artist, cover art) are preserved.
The MP3 format (MPEG-1/2 Audio Layer III)
MP3 is the most universal audio format in the world. It plays on absolutely everything: car stereos, phones, TVs, game consoles, MP3 players, browsers, editing software. Its compression is slightly less efficient than AAC, but its total compatibility makes it the safe choice for sharing an audio file.
- Compatible with 100% of devices
- Small file size
- Patent-free since 2017
- Less efficient compression than AAC/Opus
- Irreversible quality loss at low bitrates
The AIFF format (Audio Interchange File Format)
AIFF is Apple's equivalent of WAV: uncompressed audio, perfect quality, large files. It is produced by Logic Pro, GarageBand and iTunes (CD import as AIFF). Outside the Mac, it often causes playback problems.
- Lossless quality
- Supports metadata (unlike WAV)
- Very large
- Rarely played outside the Mac
MP3 vs AIFF comparison
| MP3 | AIFF | |
|---|---|---|
| Compression | Lossy | Lossless |
| Typical size (1 min, music) | ≈ 1.4 MB (192k) | ≈ 10 MB |
| Common use | podcasts, music, car stereos, portable players, email attachments | Logic Pro, GarageBand, mastering |
| Metadata (title, cover art) | Yes | Yes |
Frequently asked questions
Does converting MP3 to AIFF lose quality?
No: AIFF is a lossless format. The sound of the converted file is strictly identical to that of the original MP3, but the quality already lost during MP3 compression is not recovered.
Is the MP3 to AIFF converter free?
Yes, with no limit on the number of files, no sign-up and no watermark. Each file can be up to 200 MB.
Are my MP3 files uploaded to the internet?
No. The MP3 to AIFF conversion is performed by FFmpeg directly in your browser (WebAssembly). Your files never leave your computer or phone.
How do I convert MP3 to AIFF on iPhone or Android?
Open this page in Safari or Chrome, tap the drop area, select your MP3 file (from Files, Voice Memos, Downloads or WhatsApp), then tap "Convert". The AIFF downloads to your files.
Can I convert several MP3 files at once?
Yes, add all your files in one go. They are converted one after another and a button lets you download everything as a .zip archive.