Convert MP4 to M4A Online
Free, local, browser‑based conversion—no uploads, no registration, no limits.
Drag & drop a video file
or click to browse (MP4, MOV, AVI, etc.)
Only video files are accepted
About This Conversion
Convert MP4 files to M4A quickly and securely right in your browser. No data leaves your computer—your privacy is guaranteed.
Why Convert MP4 to M4A?
- Compatibility: M4A works on more devices and platforms.
- File Size: Often results in smaller files without noticeable quality loss.
- Editing: M4A is easier to edit with most video software.
- Sharing: Upload to social media, email, or cloud storage with fewer issues.
🔒 Privacy First
All processing happens locally in your browser. Your files never leave your computer.
How to Convert MP4 to M4A
- Drag & drop your MP4 file into the area above.
- Verify that the target format is set to M4A (it should be pre‑selected).
- Click “Convert Video” and wait a few seconds while FFmpeg processes the file.
- Download your converted M4A file—ready to use.
Frequently Asked Questions
Is this conversion free?
Yes, 100% free. No hidden fees, no trial limits.
Are my files uploaded to a server?
No. The entire conversion runs inside your browser using WebAssembly. Your data stays on your machine.
What are the supported file sizes?
You can convert files up to several gigabytes, as long as your browser has enough memory. For best performance, we recommend files under 1 GB.
Can I convert multiple files at once?
Currently, the tool processes one file at a time. You can queue files by converting them sequentially.
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All conversions run 100% in your browser. No uploads, no data sharing.