Convert MP3 to AIFF
Ethical Tube's free MP3 to AIFF converter turns MP3 audio files into AIFF, Apple's uncompressed audio format. It runs entirely in your browser, so your audio files are never uploaded, and it's free with no sign-up or watermark. The first conversion downloads the FFmpeg engine (10 MB) once, and it's cached after that.
Files are converted on your device and never uploaded.
- Price
- Free
- Uploads
- None, it runs on your device
- Sign-up
- Not needed
- Batch
- Unlimited files
- Output
- AIFF, lossless
- First use
- 10 MB download, once
How it works
How to convert MP3 to AIFF
Add your MP3 files
Drop MP3 files onto the converter, click to choose them, or paste from the clipboard. Add as many as you like.
Check the settings
AIFF is already selected. There's nothing to adjust, because AIFF keeps the full quality of the source.
Download your AIFF audio files
Each file gets its own download button as soon as it's ready. Download all saves everything in one ZIP file.
The formats
MP3 and AIFF at a glance
What is an MP3 file?
MP3 is the most widely supported audio format. Its lossy compression makes files about a tenth the size of CD audio, and at 192 kbps or more most people can't hear the difference. Every device that plays music plays MP3. It opens in everything: phones, computers, car stereos, smart speakers, browsers, and every music player and audio editor.
What is an AIFF file?
AIFF is Apple's uncompressed audio format, the Mac counterpart of WAV. It keeps a recording's full quality and is used in Logic Pro, GarageBand, and professional audio work, but files are large: about 10 MB per minute of CD-quality stereo. It opens in Mac (Music, QuickTime, GarageBand, Logic Pro), iPhone, VLC, Audacity, and most audio editors on Windows.
Good to know
What changes when you convert MP3 to AIFF
- AIFF is lossless, so no more quality is lost, but it can't restore what MP3 compression removed, and the file gets bigger.
- The audio is saved as uncompressed 16-bit AIFF.
- MP3 files are converted with FFmpeg running in your browser.
- The first conversion downloads FFmpeg compiled to WebAssembly (10 MB). It's cached, so later visits start quickly.
- Copy-protected (DRM) files can't be converted.
- Very long videos can run out of memory, especially on phones.
FAQ
Questions, answered
Is this MP3 to AIFF converter free?
Yes. It's completely free, with no sign-up, no watermark, and no limit on how many files you convert. It costs Ethical Tube nothing to run, because the conversion happens on your own device rather than on a server.
Are my files uploaded anywhere?
No. The conversion runs inside your browser with FFmpeg compiled to WebAssembly, so your files never leave your device. Once the page and the engine have loaded, it even works offline.
Does converting MP3 to AIFF lose quality?
No. AIFF is lossless, so nothing is lost in the conversion. It can't add back quality that the MP3 compression removed, though.
Can I convert several MP3 files at once?
Yes. Add as many as you like. They're converted one after another, and you can download each AIFF file as soon as it's ready or all of them in one ZIP file.
Does it work on iPhone, Android, Mac, and Windows?
Yes, in any current browser on a computer or phone. FFmpeg runs on your processor without hardware acceleration, so long videos are much faster on a computer.
What can open an AIFF file?
Mac (Music, QuickTime, GarageBand, Logic Pro), iPhone, VLC, Audacity, and most audio editors on Windows.
Is there a file size limit?
There's no upload limit because nothing is uploaded. The practical limit is your device's memory: everyday files are fine, and a computer can usually handle recordings several hours long.
Keep converting
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