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MP3 to M4A

Convert MP3 files to M4A with control over quality, sample rate and channels.

MP3 to M4A Secure file processing

Drag & drop files here

or choose a little sound from your device

Up to 100 MB per file · 10 files · 30 min max
1

Choose your format

Make it yours
Output format
2

Pick your quality

A balance of size & sound
Good sound starts with a good source.
Higher bitrate doesn’t restore lost detail.
Advanced settingsFine-tune your audio

Files expire after 60 minutes.
Your privacy matters

Private, temporary processing No account needed 100% free to use
A LITTLE KNOW-HOW

Choose an output that fits

Start with the format required by your player or editor. Auto uses 192 kbps for lossy output. WAV and FLAC use their own lossless encoding rules, so a lossy bitrate choice does not apply.

MP3 and M4A: what changes?

MP3 uses lossy compression and offers broad playback compatibility. 192 kbps is a useful starting point for music; a higher bitrate makes a larger file but cannot restore detail already lost in the source.

M4A is a container; this tool writes AAC audio inside it. It is a practical choice for compatible phones and media players. Check support in your destination app before converting a large collection.

How to use MP3 to M4A

  1. Choose files from your device. Check the file and duration limits shown above.
  2. Set your output and any editing options. Keep the original file if you may need it again.
  3. Select Convert Audio, wait for processing, then download your result before it expires.

Privacy and file handling

Your files are uploaded to this server. Downloads are restricted to your browser session and expire after 60 minutes from upload. A scheduled cleanup removes server copies. See our Privacy Policy.

GOOD QUESTIONS

A few things
you might wonder.

Still curious? Get in touch.

Is it really free?

Yes. All tools are free to use, with no registration, subscriptions or payments. Upload and processing limits apply to keep the service usable.

Where are my files processed?

Files are uploaded to the server for processing with FFmpeg. They are not processed exclusively in your browser.

When are files deleted?

Downloads expire after 60 minutes from upload. Automatic cleanup removes original and converted files after expiry; the cleanup schedule runs every minute when configured.

Will converting improve the sound quality?

Changing a format or increasing a bitrate cannot restore information lost in the original file. Keep your original when editing or archiving.