This article reviews 9 FLAC to MP3 converters, including MiniTool Video Converter and online tools such as Online Audio Converter, Convertio, FreeFileConvert, and more. It guides you through conversion steps and compares FLAC and MP3 for storage, quality, and compatibility.
FLAC is a lossless audio format, while MP3 uses lossy compression to reduce file size. If you need to convert FLAC to MP3, this article introduces the 9 best FLAC-to-MP3 converters.
Part 1. Best FLAC to MP3 Desktop Converters
- MiniTool Video Converter
- MiniTool MovieMaker
1. MiniTool Video Converter
If you have an MKV file with FLAC audio, MiniTool Video Converter can help you convert it to MP3 easily. Here’s how:
Fast Track:
- Open MiniTool Video Converter
- Import FLAC-encoded MKV Video
- Choose Output Format
- Start Conversion
- Locate the MP3 File
1. Open MiniTool Video Converter
Download and install MiniTool Video Converter. Then launch it on your PC.
MiniTool Video ConverterClick to Download100%Clean & Safe
2. Import FLAC-encoded MKV Video
Click Add Files to upload the MKV video, which has FLAC audio.

3. Choose Output Format
Click the gear icon, go to the Audio tab, choose MP3, and select the desired audio quality.

4. Start Conversion
Click the Convert option to start the conversion.
5. Locate the MP3 File
Click the folder icon to locate the output file.

2. MiniTool MovieMaker
If you're looking for a simple way to convert FLAC to MP3 on Windows, MiniTool MovieMaker is worth trying.
It is a free and user-friendly media editor that supports converting FLAC to MP3 and other audio formats. In addition to audio conversion, it offers video editing features such as trimming, splitting, merging, adding effects, and more.
Now, let’s begin to learn how to convert FLAC to MP3 with this recommended freeware step by step.
Fast Track:
- Launch MiniTool MovieMaker
- Import the FLAC File
- Edit the FLAC Audio
- Export FLAC to MP3
- Get the Converted MP3 File
1. Launch MiniTool MovieMaker
1. Download, install, and launch MiniTool MovieMaker on your PC for free.
MiniTool MovieMakerClick to Download100%Clean & Safe
2. Import the FLAC File
Click the Import Media Files option to import your FLAC file.

3. Edit the FLAC Audio
Drag and drop the FLAC audio to the audio track in the bottom timeline. Then, click the Export option at the top-right of the Player section.

4. Export FLAC to MP3
In the pop-up Export window, click on the Format drop-down menu, select MP3 from the list, and click Export.

Step 5. Get the Converted MP3 File
After conversion, you can click the Find Target option to check and play the MP3 file.

As a totally free FLAC to MP3 converter, MiniTool MovieMaker is also a useful audio merger. With it, you can add multiple audio files in different formats to this freeware and then make a single audio file.
Pros:
- It is 100% free and reliable.
- A user-friendly interface.
- No ad, virus, bundle, and watermark.
- No registration required.
- Supports multiple import and export formats.
- High-speed conversions.
- No limit on the number of conversions and downloads.
Con:
- Only supports Windows operating systems.
Part 2. Top 7 FLAC to MP3 Online Converters
- Online Audio Converter
- Convertio
- FreeFileConvert
- Online-Convert
- Zamzar
- OnlineVideoConverter
- FLAC to MP3 Converter
#1 Online Audio Converter
Online Audio Converter is perfect for people working in music collections. During the FLAC to MP3 conversion process, you can change the track name, artist, album title, release year, and genre. You can use it to convert local audio files as well as files in Google Drive and Dropbox. The software supports seven file formats – MP3, WAV, M4A, FLAC, OGG, MP2, and AMR. It also provides advanced settings – Sample rate, Channels, Fade in, Fade out, Try to remove voice, and Reverse.

Pros:
- Remove an audio track from a video.
- Convert multiple files simultaneously.
- Fast, secure, and free.
Cons:
- Ads pop up frequently.
- Only supports converting to 7 audio formats.
#2 Convertio
Convertio is a free online FLAC to MP3 converter working for all platforms. The performance of the tool is terrific. The tool has a simplified design for easy conversion. Online, local, as well as files on cloud storage, can be added to the program for the conversion process. Up to 2 files can be processed at a time, and you can save the converted file to your system, Dropbox, or Google Drive.

Pros:
- Simple file format conversion.
- Batch conversion.
- Delete uploaded files instantly and converted ones after 24 hours.
Con:
- One has to sign up for an account to get the converted files.
#3 FreeFileConvert
FreeFileConvert is a simple FLAC to MP3 Mac and Windows tool. This online FLAC to MP3 converter has got many other reliable tools such as the ability to split, encrypt and decrypt files. It supports converting document, image, audio, video, presentation, archive, eBook and font files from one format to another and can be used on any device.

Pros:
- Simplified conversion operation.
- It’s a free online tool.
- Multiple or batch file conversion ability.
Cons:
- Registration of an account is necessary to get the converted file.
- Slow batch conversion speed.
#4 Online-Convert
With a simplified design, Online-Convert is a straightforward tool to convert FLAC to MP3 online free. The site supports more conversion settings that bring about a great quality of the converted file. The online FLAC to MP3 converter supports more advanced settings that include the ability to change the audio bitrate, sampling rate, and audio channels, as well as the ability to trim and split the converted MP3 file.
Also Read: 5 Best Free MP3 Cutters to Split and Trim MP3 Easily

Pros:
- High-end conversion settings.
- Good quality conversions.
- Save the converted file on the user account created for later download.
Cons:
- Registering or logging in is required to activate the conversion ability.
- Don’t support batch processing.
#5 Zamzar
Zamzar is a free online FLAC to MP3 converter that comes in handy when one wants to convert FLAC to MP3 online and is easy to use. It allows users to convert files without having to download software tools and supports more than 1,200 different conversion types. Once the conversion is complete, users can immediately download the file from a web browser or choose to receive an email with a link to download the converted file. However, you have to save the converted file within one day.

Pros:
- Works with any Windows operating system.
- Download now or wait for an email.
- Files can be as large as 150 MB.
- Remarkable conversion speed.
Cons:
- To use more features, one has to register an account.
- The download links are only valid for 24 hours.
#6 OnlineVideoConverter
OnlineVideoConverter is a free online media conversion web application that allows you to convert any video link or file to various formats without the need to install any software on your computer. OVC is fully compatible with all modern browsers and has been regarded as the best online converter, offering high-quality and super-fast conversions to many audio and video formats. A wide range of online video-hosting sites are supported, including YouTube, Dailymotion and Vimeo.

Pros:
- No limit to the number of files you can convert.
- Support most of the available media formats.
- Mobile compatible.
Con:
- Do not support Linux.
#7 FLAC to MP3 Converter
FLAC to MP3 converter is a 100% free online tool for converting FLAC to MP3. This tool can convert multiple FLAC files to MP3 format at once. However, currently, it supports a single FLAC file up to 20 MB in size. You can upload FLAC files from your computer or via URL. You can also edit the converted MP3 file with advanced options like audio quality, bit rate, and fade in / fade out provided by this tool.

Pros:
- Change audio quality.
- Fade in & fade out audio.
- Automatically removes all your audio files after 24 hours.
Cons:
- Only supports audio file conversions.
- Supports a single FLAC file no larger than 20 MB in size.
Part 3. FLAC vs MP3
| FLAC | MP3 | |
| Storage Space | Large | Small |
| Sound Quality | Lossless, original quality | Some data lost |
| Playability | Limited devices | Universal |
FLAC vs MP3, which one is better? In fact, it’s hard to specify which is better. Now, let’s discuss them from three respects. Then you might have an idea in your mind.
1. Storage Space
MP3 files require much less storage space than FLAC files. Compared with FLAC files, MP3 files require less storage capacity. FLAC files, on the other hand, hardly lose their content, making them bulky and storage-wise.
2. Sound quality
FLAC offers better audio quality than MP3. MP3 reduces file size by removing some audio data, which can affect certain sound details. FLAC uses lossless compression, preserving the original audio quality.
3. Playability
MP3 is more widely supported than FLAC. Almost all devices and media players can play MP3 files. FLAC provides higher audio quality but may require a dedicated media player or third-party software on some devices.
In short, FLAC is best for preserving audio quality, while MP3 is better for saving storage space and ensuring compatibility across devices.
Bottom Line
To sum up, the above has listed the top 9 best FLAC to MP3 converters. Why not have a try and then decide which one suits you best? If you have any questions or suggestions about it, please let us know via support@minitool.com or share them in the comments section below.
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