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WAV to MP3
↗Convert a WAV file to a high-quality 320 kbps MP3 — smaller files, universal playback.
Audio·Available now
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Audio converter
MP3 to M4A
Convert an MP3 to a smaller, Apple-friendly M4A (AAC) audio file.
MP3M4A100% local · no upload
Guide
How to convert mp3 to m4a
Pick your MP3 file
Drop an .mp3 up to 500 MB on the converter.
Encode to M4A (AAC)
Your browser re-encodes the audio as AAC inside an M4A container.
Download the M4A
Save the smaller, Apple-friendly file.
TipAAC encoding is a browser capability — Firefox users will see a clear "not supported" message.
Format details
- Input formats
- MP3
- Output format
- M4A
- Privacy
- No upload · processed locally
Frequently asked questions
Why convert MP3 to M4A?
AAC reaches the same quality as MP3 at lower bitrates, and M4A is the native format for Apple devices and many services.
Why does my browser not support this tool?
AAC encoding requires the browser’s AudioEncoder. Firefox does not expose AAC encoding, so this tool needs Chrome, Edge or Safari.
Will I notice a quality drop?
Re-encoding lossy to lossy always costs a little quality. For best results keep your original source file.
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