An audio file format converter is a type of file converter that converts one form of audio file (such as MP3, WAV, WMA, and so on) into another form of the audio file.

If you’re having trouble playing or editing an audio file because the format isn’t supported by your software, one of these free audio converter software packages or online resources can help.

If your favorite music app on your mobile or computer doesn’t recognize the codec of a new track you acquired, audio file converter apps can help. An audio converter can convert that strange format to one that your software understands.

The improvement in sound quality is the chief factor you should keep in mind to convert your music library to FLAC. Lossless file formats allow you to enjoy them in their truest form, exactly as they were designed and meant to be played. FLAC lacks the compressing that makes certain MP3 files sound warped, and MP3 is a lossy file format.

What is a FLAC file?

A FLAC file is a lossless audio file encoded in the FLAC format, that is an accessible lossless sound compression standard. It’s comparable to a .MP3 file, but it’s compacted without sacrificing quality or actual audio data.

FLAC is a commonly adopted format that decreases the size of digital audio by about 60% and is generally supported through some of the most major platforms. The Xiph.Org Foundation created the format, which is open source.

Including the FLAC file, a FLAC Fingerprint file, which comprises the name of the file and authentication information for the FLAC file, can be produced. This file is usually called ffp.txt, and it can be produced with the command:

“metaflac –show-md5sum flac_file_names > ffp.txt”.

What is an MP3 file?

MP3 is a technical standard and basically stands for MPEG Audio Layer-3, which is a compressed audio file format established by MPEG (Moving Picture Experts Group). A file extension and compression technique for compressing a sound series into a tiny file while maintaining comparable audio quality to a CD. MP3 files are commonly used to store a song or the entire CD data and require less disc space. Because MP3 files take up very little storage space, a computer may save a large number of music files, possibly hundreds or thousands.

Prior to the invention of MP3, music producers made money by keeping music on CDs and selling them to music fans. The music on a CD is uncompressed and of excellent quality. However, there is a flaw with it. To keep the music in excellent quality, a CD takes up a lot of space; a 3-minute song takes up roughly 32 megabytes. It can take up to two hours to download a track.

Later, MP3 was created, which uses lossy data compression to encode data via inexact approximation and partial data discarding, resulting in a significant reduction in file size when compared to uncompressed audio. A 32-megabyte CD song can be reduced down to 3 MB using MP3.

This is why the music business has been completely changed by MP3. It enables users to download and store songs fast on their PC and mobile device.

A list of the best 6 free tools to convert MP3 to FLAC files online

MP3 to FLAC Converter (All-in-One)

Take into account using a media converter that guarantees no quality loss and enables you to tweak song metadata when converting MP3 to FLAC. Look no further because Wondershare UniConverter takes care of everything, as it accepts audio formats such as MP3, OGG, AAC, and WMA as inputs and outputs over 1000 formats such as FLAC, AIFF, APE, and far more without sacrificing quality. You may also use it to edit clip metadata, burn DVDs, and make your own mix.

Let’s take a closer look at the thorough guide on how to convert MP3 to FLAC.

Step 1: On your desktop, launch Wondershare UniConverter.

Install the program by downloading it from the official Wondershare website. After that, open Wondershare UniConverter by double-clicking on it in the Applications folder.

Step 2: UniConverter will open an MP3 file.

Click the add files button on the home window. You’ll be able to upload a file from your computer’s local storage. You can also simply drag and drop the files directly into the software.

Step 3: Set FLAC as the output format.

The software will display the MP3 file that was imported. Then, with your cursor in the top right corner, select Output Format.

A dialog box will appear suggesting you to choose the file type you want to use. When you click the Audio button, a choice of audio formats appears. Go down and pick FLAC as the output format, followed by the quality and performance. You can then choose to keep the quality. Uniconverter converts MP3 to FLAC.

When you’ve made all of the necessary output options, click the Start All button, and Wondershare UniConverter will begin converting MP3 to FLAC right away.

Switch Audio Converter

This converter lets you convert MP3 to FLAC and other formats easily. Because MP3 files aren’t accepted by all programmes, some people may want to convert them to FLAC or another format that their programme or other use case supports. This presentation will show you how to easily convert your MP3 files to FLAC so you can continue working on your venture.

Step 1: Switch Audio Converter is to be downloaded. After you’ve finished installing the application, follow the installation guide and launch/open it on your machine.

Step 2: MP3 Files Can Be Imported into The Program

To launch the media finder window, hit the green Add File(s) button on the primary toolbar.

Locate and choose the MP3 files on your pc, then click Open to import these into Switch for conversion to FLAC. You may also convert your MP3 files by dragging and dropping them into the software.

Step 3: Decide on a destination folder for your output.

Specify the output location for your converted MP3 files after they’ve been converted to FLAC. To see the drop-down list, click the Save to Folder or Output Folder drop-down arrow and select a directory from the list. To launch the file finder window, select the Browse icon to the right of the arrow and choose a folder on your machine.

Step 4: Choose an output format.

To see a selection of supported audio file formats, press the drop-down arrow beside the words “Output Format” on the left-hand side of the software. Just choose the “FLAC” alternative from this menu to convert your MP3 files to FLAC audio. All audio file conversions will now be done in FLAC format.

Step 5: Convert MP3 to FLAC (Convert MP3 to FLAC) (Convert MP3 to FLAC)

Select one of the Convert buttons from the service’s bottom right-hand corner or the primary toolbar. The conversion will begin as a result of this. You may either select one file at a time to convert it or all of them at once to execute batch FLAC conversions.


Convertio is one of the famous web conversion application that provides practically all significant file types and has a simple and clean UI. The site supports source files from your Pcs, URLs, and cloud storage accounts like Google Drive and Dropbox, and allows you to convert several files at once. Non-registered users, on the other hand, are limited to a file size of 100 MB.

Step 1: On the home page, click Choose Files.

Step 2: Select the Open button after picking the MP3 file you wish to convert.

Step 3: From the drop-down menu, choose FLAC.

Step 4: To initiate the modification, click the Convert button.


Zamzar is a file converter that lets you convert videos, audio files, documents, pictures, and eBooks among other formats. It claims to be able to complete all conversions in under 10 minutes. Converting MP3 to FLAC is a breeze with Zamzar! The maximum size of the file that can be uploaded is 50 MB.

To transform MP3 to FLAC online, make sure you follow the procedure below.

To transform MP3 to FLAC online, make sure you follow the procedure below. Open the Zamzar website first.

Step 2: To upload the target MP3 file, go to this website and click Add Files.

Step 3: From the Convert To drop-down menu, pick FLAC.

Select FLAC from the Convert To drop-down menu.

Step 4: To convert MP3 to FLAC, press Convert Now. The conversion will take a few seconds to complete. You can save the transformed files to your desktop after it’s finished.

Online Converter

Online Converter allows you to convert MP3 to FLAC for free online, as well as convert MP3 to any other common format. Apart from audio conversions, this converter program can also be used to modify audio files, such as merging, mixing, and trimming.

How can I convert MP3 to FLAC for free on the web? Take a look at these steps!

Step 1: Go to the webpage for the Online Converter.

Step 2: Select Audio Converter > FLAC Converter from the drop-down menu.

Step 3: Select the MP3 file you wish to use by clicking Choose File. To upload it, choose Open.

Safe Audio Converter

You could also use our audio converting tool, Safe Audio Converter. It is an online tool, which is completely free to use as well. Our highly responsive design generates the desired output in no time, and the tool has been created in such a way that anyone can use it.

You don’t have to be concerned because the complete process is happening in your browser and no files are sent to our servers. As a result, your files are completely safe. It is completely free and online, which means you can use it as often as you need to, without having to pay anything and without having to install anything. It can run on a variety of platforms, including Mac, Linux, Android, and iPhone, and it also works well in a variety of browsers. We don’t believe in sacrificing quality. We ensure that the file’s quality is preserved while converting MP3 to FLAC.

Using our tool is very simple. All you have to do is choose an audio file by clicking the “Choose Audio File” button or pick Dropbox/Google Drive from the drop-down menu. Select the audio track (MP3) from your device that you want to convert.

Place the audio file on the site. The audio track will be processed by our software in a few seconds.

The track will then be converted from MP3 to FLAC by our tool.

A “Download” button displays on the screen once the conversion is complete. To save your content to your device automatically, click Download.

That’s all there is to it! You’ve completed your task.