windows app

Convert AIFF to MP3

Convert AIFF files to MP3 audio files locally on Windows. No upload, no signup, no watermark.

offlinewindows 10 & 11free

Get it onMicrosoft Store

aiffmp3

features

what the app does

Paste from clipboard — Ctrl+V joins the queue (e.g. a Win+Shift+S screenshot lands without saving to disk).
Batch convert whole folders, sub-folder structure preserved.
Auto-convert watcher — point the app at a watched folder; converted files appear in your output folder.
Right-click .aiff files in File Explorer — "Convert to MP3" opens the app pre-loaded with your selection.
Ten UI languages, light + dark themes following the system.
Offline by design — no telemetry, no account, no user-data exfiltration.

details

AIFF to MP3 on your pc

Convert AIFF to MP3 on Windows with a local app built for quick, simple file conversion.

how it works

The app uses ffmpeg.wasm to convert your files on your Windows PC. Your AIFF files stay on the device, and you get MP3 audio files back without uploading anything.

paste from clipboard

Press Ctrl+V to add a copied file straight to the queue. A copied AIFF file from File Explorer loads into the app without extra steps.

batch conversion

Convert a whole folder in one run, with subfolders kept in place on output. A folder with 200 files across 10 subfolders comes out in the same structure.

auto-convert watcher

Use the Auto-convert page to choose a watched folder and an output folder. Keep the app in the Windows system tray, drop a fresh export there, and the converted audio file appears in the output folder in the background.

right-click in explorer

A native shell extension adds Convert to MP3 to the right-click menu for .aiff files in File Explorer. The app opens with your selection already loaded.

languages & themes

The UI is available in ten languages. Light and dark themes follow your Windows system theme automatically.

offline by design

No telemetry, no account, and no user data sent to a server. Conversion stays local, and your files never leave your device.

free & pro

The free version lets you convert AIFF to MP3 with no file size or file count limits. Upgrade to Pro with a one-time lifetime purchase to remove ads and unlock batch conversion. No subscriptions or recurring payments.