Software & Apps Backup & Utilities Best Free MP3 Tools for Converting Your Music Files Make sure your audio files work when you need them by Mark Harris Writer Mark Harris is a former writer for Lifewire who wrote about the digital music scene and streaming music services in an easy to understand, no-nonsense manner. our editorial process Mark Harris Updated on November 19, 2019 Backup & Utilities Design Cryptocurrency MS Office Windows Linux Google Drive Apps File Types Backup & Utilities View More Tweet Share Email Sometimes, you need to convert a music file into another audio format for compatibility reasons. Learn what's available as free software, and find the best MP3 converter for your needs. AC Audio Converter What We Like Multiplatform. Simple user interface. Extracts CD soundtracks. Fast converter. What We Don't Like Limited documentation. Less versatile than other tools. AC Audio Converter is a full-featured tool that converts music files to several formats. Currently, the program supports MP3, AAC, MP4/M4A, FLAC, Ogg Vorbis, and Bonk formats. If you want to batch-convert audio files, add them to a job list and then select an encoder to convert. If you need to rip a CD, this free tool is ideal because it converts your music to one of the above formats. It's also smart enough to add ID3 tag information automatically through the Compact Disc Database (CDDB). If you’re looking for a combined CD ripper and file-format converter, then this might be the only tool you'll need. Free MP3/WMA/OGG Converter What We Like Free to download and use. Batch file conversion. Settings to customize output. Fast and efficient conversion. What We Don't Like Only available for Windows 10 and earlier. Basic interface design. If you just need a simple, easy-to-use audio file converter, Free MP3/WMA/OGG Converter fills the bill. Although the name suggests a limited number of supported formats, it actually works with quite a few, including MP3, WMA, OGG, AC, M4A, FLAC, and MP2. The interface takes you through a wizard in which you simply choose an output format using a drop-down menu. The program is ideal for basic audio format conversion. Switch Audio File Converter What We Like Simple to use. Batch file conversion. Supports over 40 file formats. Free version available. What We Don't Like Basic user interface. Free trial supports limited file formats. Available for Macs and PCs, the free version of Switch Audio File Converter converts MP3, WMA, AC3, AIFF, AU, WAV, and VOX formats. When you first install the program, you'll get a taste of what the full version (Switch Audio File Converter Plus) can do. When the Plus trial expires, the program reverts to a free version for non-commercial home use only that doesn't expire. The clean, simple interface makes converting files quick and easy. Switch also comes with a basic player to listen to tracks. However, the free version doesn't support lossless formats like FLAC unless you upgrade. But if all you want to do is convert to MP3, for example, then it's still a useful tool.