🎵 Audio Converter
Convert MP3 to M4A — Free & Private
Convert MP3 files to M4A for use in iTunes, iPhone, and Apple ecosystem apps.
✓ Free forever✓ No upload✓ No signup✓ Instant
Ready to convert your MP3?
100% in your browser · No file size limit · No account needed
How to Convert MP3 to M4A
1
Open the Converter
Click "Convert Now" to open the audio converter with MP3 → M4A pre-selected.
2
Upload Your MP3
Drag & drop your MP3 file or click Browse to select it.
3
Convert Instantly
FFmpeg.wasm processes your audio entirely in the browser — nothing uploaded.
4
Download M4A
Your converted M4A file downloads automatically when ready.
Why Convert MP3 to M4A?
- 🎵 From MP3 — convert the world's most common audio format to higher quality or more compatible options
- 🍎 Apple-native — M4A is preferred by iTunes, iPhone, and Mac
- 📦 Compact file size — AAC compression inside keeps files small
- 🎵 iTunes compatible — imports directly without any re-encoding
- 📱 iOS-friendly — plays on all Apple devices with no plugins
- 🔒 100% private — files never leave your device
Features
100% Private
Files never leave your browser. Powered by FFmpeg.wasm.
Instant
In-browser processing — no server queue, no waiting.
Free
No account, no fee, no watermarks. Ever.
Quality Preserved
Converts at the highest quality settings by default.
Mobile-Friendly
Works on any device — phone, tablet, desktop.
No Install
Nothing to download. Works in any modern browser.
Frequently Asked Questions
M4A is the file container (.m4a extension) and AAC is the audio codec inside it. They are effectively the same thing.
Yes — Android has supported M4A/AAC natively since version 4.1. All major Android music apps handle M4A.
Yes — 100% free, no limits, no watermarks, no account needed. Convertlo runs entirely in your browser.
No. Conversion happens locally using FFmpeg.wasm in your browser. Your files never leave your device.
Audio files convert one at a time to prevent memory issues with FFmpeg.wasm. Each file processes in sequence.