Will converting AIFF to MP3 lose quality?

Yes, by definition — MP3 is a lossy format, and discarding detail the ear rarely misses is exactly where the size savings come from. At the High setting the difference is inaudible to most listeners on most equipment. Keep the AIFF original as your master copy and convert delivery copies from it.

What bitrate will the MP3 have?

You pick one of three levels: High encodes at 320 kbps, Standard at 192 kbps, and Small at 128 kbps. Standard is a solid default for music, High is effectively transparent, and Small keeps voice recordings and podcasts compact.

Is my file uploaded to a server?

No. The entire AIFF to MP3 conversion runs locally in your browser. The only thing fetched is the conversion engine itself — a one-time ~31MB download that your browser caches. Your files never leave your device, and there is nothing for anyone else to store.

Why does the first conversion take a moment to start?

The first run downloads the audio engine — FFmpeg compiled to WebAssembly, about 31MB. Your browser caches it, so later conversions start immediately, whether you're converting one file or a whole batch.

Free Audio Converter

Convert AIFF to MP3

Compress AIFF audio — Logic and GarageBand exports, Mac CD rips — into MP3s a tenth the size for sharing.

This conversion runs in this browser tab. The selected file is not uploaded for processing.

Private by defaultBrowser-firstNo signup for quick jobs

AIFFMP3

Drop audio or video files

browse files

Convert audio formats or extract MP3 from video

MP3WAVFLACMP4

Instant results25 free per dayPrivacy first

AIFF to MP3, step by step.

These steps describe the AIFF input and the MP3 export for this exact route.

Upload AIFF Files

Drag and drop your AIFF files or click to browse. You can queue several at once.

Convert in Your Browser

The first run fetches the conversion engine (a one-time ~31MB download); after that, AIFF to MP3 conversion happens entirely on your device — nothing is uploaded.

Download MP3

Save the converted file right away. Multiple files are bundled into a ZIP for one-click download.

What to expect

What matters for MP3 output.

Review the behavior this AIFF to MP3 tool is designed to preserve, expose, or simplify.

100% Private

All processing happens in your browser. Your files never leave your device.

Plays Everywhere

MP3 is the one audio format every device, app, car stereo, and browser of the last two decades can play.

One-Time Engine Download

The first conversion fetches a ~31MB audio engine; your browser caches it, and everything runs locally from then on.

Questions about AIFF and MP3.

Check the format behavior, limitations, and follow-up options before processing a real file.

AIFF is the Mac's native uncompressed format: Logic Pro and GarageBand bounce to it, and iTunes ripped to it for years. The files are studio-friendly and enormous — about 10MB per minute. For sending a mix to a client, posting a demo, or loading music onto anything with finite storage, MP3 at the High setting delivers near-identical listening quality at a tenth of the size. Keep the AIFF as your master.

Related routes

Continue from MP3.

Choose another format only when it matches the next job.

AIFF to WAV AIFF to FLAC WAV to MP3 Browse all conversions

Next step

Ready to process another AIFF file?

Start here again, or compare plans when the job needs server capacity, retention, or repeat automation.

Start this conversion View plans