Why convert AIFF to MP3?

AIFF files from Mac tools are large; MP3 is smaller and opens on more devices and upload forms.

AIFF to MP3

Q: Do my files leave this device?

No. Conversion is designed to run locally in the browser.

Convert AIFF audio to MP3 for phones, sharing, and everyday apps — fully in your browser.

Drop an AIFF file here

or click to choose from your computer

AIFF · PCM · Mac & pro audio exports

✓ Local processing in your browser · Files are not uploaded to our servers

About AIFF to MP3 conversion

AIFF is a common uncompressed audio format on Macs and in pro-audio workflows, similar in role to WAV. Files are high quality but large. MP3 is a compressed format that plays on almost every phone, car stereo, and messaging app.

This page converts AIFF to MP3 in your browser. You add an AIFF file, run Convert to MP3, then download or save the result to Your Library without uploading the file to Sound Booster servers for the conversion step.

Use AIFF to MP3 when you exported from Logic, GarageBand, or another Mac tool and need a portable copy, or when an upload form only accepts MP3.

Long or high-sample-rate AIFF files need enough memory. If conversion fails, try a shorter clip or Chrome/Edge, and keep the tab open until progress reaches 100%.

How to convert AIFF to MP3

Converting AIFF to MP3 on Sound Booster stays local: add the file, encode to MP3, download when progress finishes.

Output is fixed to MP3. The first run in a session may load the browser encoder before work starts.

Add your AIFF

Drop an AIFF or AIF file on the panel, choose it from disk, or open it from Your Library.

Convert to MP3

Click Convert to MP3. Progress shows as a percentage while encoding runs in your browser.

Download or save

Save the MP3, or store it in Your Library for Volume Booster and other audio tools.

AIFF and MP3 formats

What is an AIFF file?

AIFF (Audio Interchange File Format) is an uncompressed format widely used on macOS and in professional audio. Like WAV, it stores PCM samples with high fidelity and large file sizes. Some Windows tools open AIFF less smoothly than MP3 or WAV.

What is an MP3 file?

MP3 is a lossy compressed format for everyday listening and sharing. Converting AIFF to MP3 shrinks the file for phones, cars, and upload forms that expect the classic MP3 type.

What people use it for

Mac exports

Turn Logic or GarageBand AIFF exports into MP3 for sharing outside the studio.

Upload forms

Submit MP3 when a site rejects AIFF or has tight size limits.

Cross-platform playlists

Play the track on Windows phones and cars that prefer MP3.

Library workflow

Save MP3 to Your Library and continue with trim, boost, or EQ tools.

Frequently asked questions

Does AIFF to MP3 restore lost quality?

No. Conversion expands the file to PCM, but detail already removed by MP3 encoding cannot be recovered. WAV is still better for editing and further processing.

Do my files leave this device?

No. Decoding and WAV encoding are designed to run locally in the browser for this tool.

Is it free?

Yes on this page, without a mandatory account.

Why is the WAV so large?

Uncompressed PCM needs more disk space than MP3. That is normal and expected for editor-friendly files.

Why did conversion fail?

Try Chrome or Edge, a shorter file, and keep the tab open until progress reaches 100%.