If you have a small-size AVHCD file and want to extract MP3 audio track from it, you can turn to a free online converter. As we mentioned above, there are many online converting tools can help you convert MTS to MP3. In case you don’t know which one you should use, here we introduce you with one popular online MTS to MP3 converter, FVC Free Online Video Converter.

FVC Free Online Video Converter is one of the most popular video and audio converting tool which can help you free convert MTS to MP3 with ease. Besides the AVCHD file converting, it also allows you to make other media file conversions. The next steps will show you how to convert MTS to MP3 online with this online video converter.

Step 1.Open your browser and go to the official site of FVC Free Online Video Converter. It provides a special MTS to MP3 converting page, https://www.free-videoconverter.net/free-online-video-converter/. You can navigate to here for the conversion.

Step 2.Find and click the Add Files to Convert button to download and install the launcher. After activating the launcher, upload the MTS file you want to convert.

Step 3.Make sure the output format is MP3 and then click the Convert button to start extracting MP3 audio from your AVCHD file. Then, the program will automatically start the MTS to MP3 converting.

How to Free Convert MTS to MP3 without Quality Loss： https://www.free-videoconverter.net/convert-mts/mts-to-mp3/