MP3 to M4A Converter
Convert MP3 audio files to M4A (AAC) format. Better quality at same bitrate. Compatible with Apple devices. Free online converter.
How to Convert MP3 to M4A
- 1 Click to upload your MP3 audio file
- 2 Select the desired bitrate for output quality
- 3 Click Convert to M4A to start the conversion
- 4 Wait for the processing to complete
- 5 Download your converted M4A file
Frequently Asked Questions
How does browser-based video processing work? ▼
MagicKit uses FFmpeg compiled to WebAssembly (WASM). This brings professional video editing capabilities directly to your browser.
What video formats are supported? ▼
MP4, WebM, MOV, and AVI. Some tools also support MKV and other formats.
Is there a file size limit for videos? ▼
We recommend files under 500MB for optimal browser performance. Larger files will work but may be slower.
Why does video processing take time? ▼
Video encoding is computationally intensive. Processing happens on your device, so speed depends on your computer's capabilities.
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Last updated: January 15, 2026 · v2.1