Unlimited ConvertConvert MP4 to AAC — Free & Unlimited.
AAC is known for achieving better sound quality than MP3 at similar bitrates. If you need a high-performance audio file from your MP4 video, our local converter is the most secure tool for the job. By processing everything within your browser, we ensure that your files stay on your machine, giving you professional results without the typical privacy trade-offs.
Don't let slow server speeds hold you back. Unlimited Convert utilizes your own hardware to transcode audio. This means you aren't competing with other users for server time. Your conversion starts the second you're ready, providing a snappy experience that cloud-based competitors simply can't match.
Our architecture is built around the idea of 'zero-knowledge.' We don't want your files, so we built a tool that doesn't need them. Everything happens in your browser's local memory. Once the conversion is done and you close the tab, all traces of the process are gone from your RAM, leaving your files safe and sound on your disk.