Convert MP3 to AIFF Online Free
Convert MP3 audio to AIFF format. FFmpeg on our secure servers decodes your MP3 and re-encodes it as uncompressed AIFF, the standard format for professional audio on macOS.
ChangeThisFile converts your MP3 to uncompressed AIFF using FFmpeg on secure servers. AIFF is Apple's professional audio format widely used in Logic Pro, GarageBand, and broadcast workflows. Your file is encrypted during transfer and auto-deleted afterward, completely free with no signup.
Convert MP3 to AIFF
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MP3 vs AIFF: Format Comparison
Key differences between the two formats
| Feature | MP3 | AIFF |
|---|---|---|
| Full Name | MPEG-1 Audio Layer III | Audio Interchange File Format |
| Developer | Fraunhofer IIS / ISO | Apple Inc. |
| Compression | Lossy | Uncompressed (PCM) |
| File Size (3 min song) | ~5–10 MB | ~30–60 MB |
| Audio Quality | Lossy (artifacts at low bitrate) | Lossless (no generation loss) |
| Metadata Support | ID3 tags | Markers, loop points, full metadata |
| DAW Compatibility | Widely supported | Native in Logic Pro, GarageBand |
| Platform Origin | Cross-platform | Apple / macOS |
When to Convert
Common scenarios where this conversion is useful
Logic Pro and GarageBand projects
Import MP3 tracks into Apple DAWs by first converting to AIFF. Logic Pro and GarageBand work natively with AIFF and perform better with uncompressed audio during editing and mixing.
Broadcast and podcast mastering
Radio stations and podcast editors often require AIFF deliverables. Convert your MP3 masters to AIFF to meet broadcast specification requirements.
CD authoring
CD burning software on macOS typically uses AIFF as the source format. Convert MP3 tracks to AIFF before importing into Disc Utility or Toast Titanium for CD creation.
Sample library preparation
Convert MP3 samples to AIFF for use in samplers and instruments like EXS24 or Kontakt, which prefer uncompressed audio to avoid decoding overhead during playback.
Archival with loop point metadata
AIFF supports embedded loop points and markers, making it ideal for archiving audio that may be used in games, interactive media, or looping installations.
How to Convert MP3 to AIFF
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1
Upload your MP3 file
Click the upload area or drag and drop your MP3 file. Files up to 50MB are supported. The transfer is secured with HTTPS encryption.
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2
Convert to AIFF
Click Convert. FFmpeg decodes the MP3 and writes it as 16-bit PCM audio in an AIFF container, preserving sample rate and channel count from the source.
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3
Download your AIFF file
Download the resulting AIFF file when ready. The file is automatically removed from our servers after you download it.
Frequently Asked Questions
No. Since the source is a lossy MP3, any artifacts already present in the MP3 are preserved in the AIFF. Converting MP3 to AIFF does not recover lost audio data — the AIFF will be uncompressed but still reflects MP3 quality.
FFmpeg outputs AIFF at 16-bit PCM with the sample rate matching the source MP3 (typically 44100 Hz). This is compatible with standard CD-quality audio requirements.
Yes. Logic Pro has excellent native support for AIFF files. You can import the converted AIFF directly into a Logic project without any additional plugins or configuration.
AIFF stores uncompressed PCM audio data, while MP3 uses lossy compression to reduce file size. A 3-minute song in MP3 at 128 kbps might be around 3 MB, while the same song in AIFF could be 30 MB or more.
AIFF support on Windows is limited. Windows Media Player does not support AIFF natively. You would need iTunes, VLC, or a DAW with AIFF support. For Windows workflows, WAV is often a better uncompressed alternative.
Yes. AIFF supports metadata including title, artist, album, genre, and tempo markers. However, AIFF uses its own AIFF chunk format for metadata rather than ID3 tags used by MP3.
Currently, conversions are handled one file at a time. Upload and convert each MP3 file separately to get the corresponding AIFF output.
Yes. Files are uploaded over HTTPS, processed by FFmpeg on our server, and automatically deleted after download. We do not retain or analyze your audio files.
AIFF is uncompressed PCM audio. AIFF-C (also called AIFC) is a variant that can store compressed audio using various codecs. This converter produces standard uncompressed AIFF.
Yes. AIFF can be converted back to MP3 using ChangeThisFile. However, each re-encoding of lossy formats introduces additional quality loss, so it is best to keep the original MP3 as your source file.
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