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Converting MP3 to FLAC online is easy with this tool! Use the MP3-to-FLAC converter for free to change the format of your audio files in just a few clicks. You can also use a desktop media converter from Movavi.

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How to convert MP3 to FLAC on Windows and Mac with Movavi

Edited by Ben Jacklin

An online free MP3-to-FLAC converter is a great choice to convert a single file. But if you want to convert a few audio files or need more advanced features, try a desktop program instead. Our choice is Movavi Video Converter. It is not just about video files, it can actually turn your audio into different formats, too.

Our MP3-to-FLAC converter app recognizes over 180 different video and audio files. You can even extract audio from a video file first before converting MP3 to FLAC. Here’s our step-by-step guide to using Movavi Video Converter and enjoying the MP3-to-FLAC converter with free download and simple instructions.

Step 1. Install the MP3-to-FLAC converter

First, you need to download and install the app. You can install the MP3-to-FLAC converter on Windows or Mac. Follow the instructions to install the converter, and the program will open automatically, ready for the MP3-to-FLAC conversion.

Step 2. Add your files to the program

In the top left, you will see the option to click Add Media and then Add audio. From here, you can navigate to the MP3 files you are looking to convert. If you have a big music library, you can import them in batches.

Step 3. Choose FLAC as the output format

Open the Audio tab and expand the file options, where you can select FLAC as the output file format, as well as choosing a number of different audio options.

Step 4. Convert MP3 to FLAC

On install of the MP3-to-FLAC converter, a Movavi Library folder is made, this is the default for output files. But when you click Save to in the software, you can change the destination folder.

Once your destination folder is set, click Convert and let the best MP3-to-FLAC converter work its magic. When it’s done, the folder you set up for the converted files will open and you should see the FLAC files there, ready to open and play on your favorite devices. Now you know how to convert MP3 to FLAC with ease, without having to go to any risky sites with ads you’d rather not have on your computer.

MP3 vs. FLAC

Comparison parameter



Compression type



Standard file parameters

16 bit/44.1kHz

16-bit to 24-bit/192kHz


Moving Picture Experts Group

Xiph.Org Foundation

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Hopefully, this guide will help you to choose the best MP3-to-FLAC converter suitable for your needs. You can use an online MP3-to-FLAC converter for free or choose an advanced desktop program. There is also MP3-to-FLAC converter freeware available that can work for you, too.

If you don’t want to install any additional software on your PC, we recommend you try our MP3-to-FLAC converter online. For converting multiple audio files or larger files, our MP3-to-FLAC converter software does the job perfectly, quickly, and in high quality to preserve your audio. With over 180 different file types recognized, you can use Movavi Video Converter for all kinds of different conversions.

Frequently asked questions

MP3 or FLAC: Which is better?

Does converting MP3 to FLAC improve quality?

Is MP3-to-FLAC a lossless conversion?

How do I convert MP3 to FLAC in iTunes?

How do I convert MP3 to FLAC in FFmpeg?

How do I convert MP3 to FLAC with VLC?

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