Will converting MP3 to AIFF improve sound quality?

No. MP3 is a lossy format — audio data was permanently discarded when the file was first encoded. Converting to AIFF does not restore that lost data. The AIFF file will sound identical to the source MP3. The benefit is that no additional quality loss occurs on re-encoding, and the file is stored in a widely compatible uncompressed container.

What is the best free tool to convert MP3 to AIFF?

FFmpeg is the most reliable option: run `ffmpeg -i input.mp3 output.aiff` from the command line. For a graphical interface, fre:ac (Free Audio Converter), Audacity, and dBpoweramp are popular choices on Windows and macOS. On macOS, iTunes/Music can also export to AIFF.

How large will the AIFF file be compared to the MP3?

AIFF is uncompressed, so it is typically 5–10x larger than the equivalent MP3. A 5 MB MP3 encoded at 128 kbps might yield a 25–50 MB AIFF file. The inspector on this page estimates the projected size based on your file's sample rate, channel count, and duration.

Is this inspector tool uploading my audio file anywhere?

No. All processing runs inside your browser using the Web Audio API. Your file is read into browser memory only and is never sent to any server. Refreshing the page clears all data.

What audio formats can the inspector read?

Any format your browser can decode natively: MP3, WAV, OGG Vorbis, AAC/M4A, FLAC (in supported browsers), and WebM. The inspector reads the decoded PCM properties — sample rate, duration, and channels — regardless of the source container.

What is the difference between AIFF and WAV?

Both are uncompressed PCM containers of similar quality and file size. AIFF was developed by Apple and is the preferred format in macOS and Apple DAWs. WAV was developed by Microsoft and is more universal across Windows and Linux tools. For cross-platform work, WAV is slightly more compatible; for Apple-ecosystem work, AIFF is the natural choice.

Does AIFF support metadata tags?

Yes. AIFF supports ID3-style metadata including track title, artist, album, and artwork. FFmpeg preserves metadata from the source MP3 when converting. Some older AIFF implementations have limited tag support, so verify tags in your target application after conversion.

MP3 to AIFF Converter

Name: MP3 to AIFF Converter
Availability: InStock
Author: Nham Vu

Inspect any audio file's metadata in your browser and learn exactly how to convert MP3 to AIFF using free tools like FFmpeg.

Audio Metadata Inspector

Drop any audio file to see its properties and estimated AIFF size.

Drop audio file here or click to browse MP3, WAV, OGG, AAC, FLAC supported

Convert with FFmpeg

The fastest, free, cross-platform conversion command:

ffmpeg -i input.mp3 output.aiff

Replace input.mp3 with your file path. FFmpeg is free at ffmpeg.org.

GUI alternatives

fre:ac — free, open-source, Windows / macOS / Linux
Audacity — free multi-track editor with AIFF export
iTunes / Apple Music — macOS built-in AIFF export
dBpoweramp — paid, batch conversion, Windows / macOS

Drop an audio file on the left to inspect its metadata

No file is uploaded — everything runs in your browser

MP3 vs. AIFF — What You Need to Know

MP3 (Lossy)

Discards audio data permanently
Re-encoding degrades quality further
Very small file size (3–10 MB typical)
Universal device compatibility

AIFF (Uncompressed)

Zero quality loss — bit-perfect playback
Preferred for Logic Pro, GarageBand, macOS
5–10x larger than equivalent MP3
Less universal outside Apple ecosystem

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Summary

Inspect any audio file's metadata in your browser and learn exactly how to convert MP3 to AIFF using free tools like FFmpeg.

How it works

Drop any audio file (MP3, WAV, OGG, AAC) onto the inspector panel.
The Web Audio API decodes the file and reads its sample rate, duration, and channel count.
The inspector calculates the estimated uncompressed PCM size and projected AIFF file size.
Use the recommended FFmpeg command or a desktop tool to perform the actual conversion.
Verify the output AIFF file in your DAW or media player before deleting the source.

Use cases

Prepare MP3 tracks for import into Logic Pro or GarageBand on macOS.
Archive an MP3 music library in AIFF for compatibility with Apple hardware.
Check a file's sample rate and channel layout before conversion.
Estimate the disk space an AIFF archive will require.
Verify audio properties without installing a desktop audio editor.
Teach yourself the difference between lossy MP3 and uncompressed AIFF.
Pre-screen files before a mastering or mixing session.
Confirm stereo vs. mono layout before sending tracks to a collaborator.

Frequently Asked Questions

Related tools

Mp3 To Wav Audio Mp3 To Flac Audio Sample Rate Latency

Last updated: 2026-05-29 · Reviewed by Nham Vu