Convert AAC to MP3 Online

Convert Advanced Audio Coding (.aac) files to MPEG Audio Layer III (.mp3) format online for free. Fast, secure, and no sign-up required. Your files are automatically deleted within 1 hour.

Free online aac to mp3 converter — no software needed. Instantly change, transform, and export your files in seconds.

Drag & drop your file here

or browse to select — accepts .aac (max 10MB)

How to Convert AAC to MP3 Online

1. Upload Your File

Select or drag your .aac file into the converter

2. Convert Instantly

Your file is converted from .aac to .mp3 in seconds

3. Download Result

Download your converted .mp3 file to any device

Best Free AAC to MP3 Converter

Lightning Fast Conversion

Convert .aac to .mp3 in seconds. No waiting, no queues — instant processing.

100% Secure & Private

All files are encrypted in transit via HTTPS and auto-deleted within 1 hour. Your data stays private.

Works on Any Device

Browser-based converter — works on Windows, Mac, Linux, iOS, Android, and Chromebook. No installation needed.

No Sign-Up Required

Start converting immediately. No registration, no email, no watermarks on your converted files.

When to Convert AAC to MP3

Sharing & collaboration

Send aac files to people who only have mp3-compatible software, without losing layout or formatting.

Cross-platform compatibility

Open and edit your aac file on devices that don't support it natively by converting to mp3 once.

AAC vs MP3 — Why Convert?

AAC (AAC)

Standard AAC file format
Widely used across platforms
AAC files may have specific features
May require specific software to open

MP3 (MP3)

MP3 format for broader compatibility
Easy to share and distribute
Supported by many applications
Ideal for your target workflow

AAC to MP3 — Frequently Asked Questions

Is AAC to MP3 conversion free?

Yes! Reformat offers free AAC to MP3 conversion. Free users get 3 conversions per day. Upgrade to Pro for unlimited conversions.

How do I convert .aac to .mp3?

Simply upload your AAC audio file, click Convert, and download your MP3 audio file. The entire process takes just seconds.

What is the maximum file size?

Free users can convert files up to 10MB. Pro users get up to 100MB, and Business users get up to 500MB.

Is my file safe?

Absolutely. All files are processed securely and automatically deleted from our servers within 1 hour. We never access or share your data.

Can I convert multiple files at once?

With a Pro or Business account you can batch convert multiple files. Free users can convert one file at a time.

Is the AAC to MP3 converter free?

Yes. Anonymous users get 5 free conversions per day; signed-in users get 10/day plus 2 AI uses. Pro removes the daily limit and raises the file-size cap.

What is the maximum file size for AAC to MP3?

Free users can upload files up to 10MB. Pro raises this to 100MB and Business to 500MB.

Is it safe to upload my aac file?

Files are uploaded over HTTPS, processed on our servers, and deleted within 1 hour. We do not read, share, or train on file contents.