3 tools for convert youtube to mp3

1. 1conv.com

The link is as follows:convert youtube to mp3
the advantage is simple and fast, it can detect subtitle intelligence. If the language of subtitles are not what you want, you can try the link suppose you are japanese,and another advantage is website won't limit the download speed.

2. Audacity

Audacity
Audacity is another popular option for Windows, Linux, and macOS. The way it works for YouTube conversions is pretty simple: record whatever sounds the computer is making and then save it to an MP3 file! To do this, you have to change a few settings in Audacity and make sure no other sounds are playing on your computer.

3. MediaHuman YouTube to MP3 Converter

MediaHuman YouTube to MP3 Converter
This software is the very best option for Windows, Mac, and Ubuntu. Batch downloads and multi-link importing are supported so that you can queue up and download more than one MP3 file at once. also supports playlist downloads so that you can instantly grab all the videos from a playlist and convert each video to a separate MP3.