Convert .flac files to .mp3 in Mac OS X


The good thing is that there are many tutorials online showing you how to convert .flac to .mp3. The bad thing is that most of them use shareware flac converters for Mac, which usually works for a few days before you have to purchase it.

Converting the lossless flac files to mp3 (or any similar format) is necessary for compatibility. For example, iTunes does not play flac files. In this tutorial, however, I will show you how to convert FLAC audio files to MP3 files using a freeware flac converter: All2MP3. All2MP3 works on Mac OS 10.4 Tiger, 10.5 Leopard and 10.6 Snow Leopard, so most users would find the instructions below useful.

If you are a Windows user, you can use dbpoweramp or WinAmp to play flac files.

Tools for conversion

Download All2MP3. It is a .zip file, which you can double-click to get the installer. When the installer is obtained, double-click it and install All2MP3.


All2MP3 is a free application with a single drag and drop method interface. Upon opening it, you will be presented with a simple window with an option for quality.

Convert FLAC to Mp3
Mac OS X application All2MP3 converts FLAC files to MP3

Drag and drop the .flac files that you want to convert. Then, set the Quality at 192 Kbps (standard MP3 is at 128 Kbps, so 192 Kbps would be good quality) and hit All2MP3. Once the conversion is over, you will find the MP3 files in the same location as the original FLAC files.

What is .FLAC

Free FLAC to MP3 converterFLAC stands for Free Lossless Audio Codec. Lossless formats have high file size and high quality. Most people prefer .mp3 format because of its lower size and excellent compatibility on various devices.

The good news is that quality difference between .flac and .mp3 is undetectable for most humans. By careful compression, which retains only those frequencies which a human can hear, .mp3 can be nearly as good as .flac files for most purposes.


  1. Hey, I just installed it on my iMac running Lion, and as far as I can tell, it runs perfectly! 😀 This is really nice, as I needed to convert some .flac files for my iPhone.

  2. The tool was updated to work with Snow Leopard when it was released, so we can expect Lion compatibility soon.

  3. hi

    ammm 192Kbps is a shity quality. you need at least 256 to hear the music realy although 320Kbps should be standard because you loose sound information anyway using mp3 files.

  4. So simple, great stuff. I’ve have never heard of Flac files and now they are all MP3 in a breeze.
    Thanks a lot!

  5. Awesome!! Works great!! Screen does look different then it shows above, but still works great…. Note: DO NOT CLICK BOX THAT SAYS ” Throw files away after converting”… It not only throws away the Flac files but also the converted files….. It will piss you off if you do!! Makes you download again…

  6. SOOOO annoying that Apple won’t let iTunes do this in the first place, but anyway, thanks so much for this!

  7. I had same problem w/ error & corruption messages on the first try. Then noticed the file I was trying to convert didn’t have a readable name. Renaming file fixed the issue and it works super – 3 seconds (or less) conversion time. For example:
    Downloaded YouTube video with original name: videoplayback
    Changed file name to: videoplayback.flac

    Add dot flac and you should be good to go. Thanks TechZilo!

  8. How does one convert a flac file if one cant even extract the bloody file out from winzip?

  9. BTW, for those who are interested, it took exactly 30 minutes to convert 185 flacs into mp3s and trash the flacs. That’s about 6 files a minute, isn’t it? Awesome!

  10. All2MP3 Rocks…. works perfectly on my 10.6 and I love it.

    BTW, I load tested it with converting 185 flac files to mp3 in one go and it did it without a hitch. Perfect App. I Cannot thank the developer enough.

    He does not even have the “Donate” button. Such a giver!

  11. Nice little application, though the user interface is not exactly as shown in the picture on this site. The program downloaded quickly and worked as advertised, with absolutely no issues, on a very old and tired G4 PowerBook using OS 10.5.8.

  12. Worked like a charm. No problems. Quick, simple, free. Does what it says it does. What else can you ask for.

  13. All2MP3 actually didn’t work at all for me. I followed the instructions and all it did was produce empty mp3 files.

  14. This software is very good! I converted all 11 Kenny G Live flacs to mp3 on my MacBook Pro running OS X 10.6. I am using v2.0820.
    Norm Gregory: I never encountered your problem. It converts individual tracks correctly.

    Quick note: Best = 320kbps, Good = 256 and Middle = 192.

  15. Nevermind, it works. After a crash it started working. Conclusion, not as shit as i tought. Pretty sweet actually! Thanks

  16. Doesnt work for me, reports every flac file i have as corrupted. Conclusion, piece of shit

  17. I have ALL2MP3 v 2.0820 (seems to the latest) and it turns a FLAC into one big long MP3. No splitting up of the individual tracks.

  18. It seems to be working –
    speed seems to be an issue.
    70 flacs in 30 min

    dual 2.5 G5, OSX 10.4.11

  19. I’m running Leopard 10.5.8 on my G5 dual 2Ghz and this runs very well. Fast and does what it says, converts ALL to Mp3 format.

  20. Worked perfectly (and faster than expected) for me, using 10.5.8 intel-based MBP, and 320kbs. Listening to my converted tracks now…

  21. All2Mp3 works like a charm under SnowLeopard. Make sure you install the LAME-Package first.

    Thx mate

  22. Doesn’t work very well for me on Mac OS X 10.6. I’m trying to convert to 320KBPS and before I can convert anything, I’m gettings LOADS of bad file name errors, and then when I try and convert the files it actually likes, I see a WAV file turn up, the same bad file name error, then the WAV file disappears.

  23. All2MP3 worked fine for me a few weeks ago. Now it acts like everything is running fine, but NO MP3 files anywhere. Where are they going, if anywhere. It seems like it is doing the conversion task, but giving me no conversions. Very stange since it has worked so fine in the past.

  24. It didn’t work for me on 10.4, even after the install of LAME. The site seems to give no technical help or troubleshooting. I suppose installing 10.5 would help, but an OS upgrade just for a simple conversion isn’t worth it.

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