MP3 to FLAC Converter

Convert your Audio, Video and other Files from one format to another online for free!

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MP3

MP3 is a format standard for digital audio that uses lossy compression developed by the Fraunhofer Society. Its official name is MPEG-1 Audio Layer III or MPEG-2 Audio Layer III.

FLAC

The Free Lossless Audio Codec (FLAC) is a digital audio coding format that uses lossless compression developed by Xiph.Org Foundation. It was released in 2001, and its filename extension is .flac.

Frequently Asked Questions

Is FLAC the best quality for audio files?

Yes. FLAC files are compressed close to half the size of the original audio file with no loss in audio quality in terms of how it sounds. FLAC files may also reach a resolution of 32-bit, 96kHz, which is better than CDs' quality.


Is MP3 better than FLAC?

Yes and no. Both formats compress audio files, but FLAC does it much better because there is no loss in the audio quality. You can't really compare the two formats in terms of quality. On the other hand, MP3 audio files take up less space compared to FLAC files. So if you think about it, both have their selling point.


How can you convert MP3 to FLAC?

THE best way to convert MP3 to FLAC is by use of an online audio converter. Using a free, web-based converter such as Convertr.org is a simple and quick way to change your MP3 files to FLAC. All you need to convert the MP3 files on the site.


Is FLAC worth it compared to MP3?

If you want to preserve the original audio quality, going with the FLAC file format is the best option. However, they require a bit more storage than MP3, but if that's not an issue for you, FLAC is worth it.


Can you hear the difference between MP3 and FLAC audio files?

Yes, there is a striking difference in the sound quality when you listen to FLAC files, but only if you use great headphones and a similar sound system. Otherwise, you can't really tell the difference between MP3 and FLAC audio files.


How to Convert MP3 to FLAC?


There's no shortage of software and apps that convert MP3 files to FLAC format, but using a website is the best way to go about it. You don't have to worry about installing a program or an app on your device using an online converter such as Convertr.org.

Here's what you do:

  1. Upload your MP3 files onto the website, or drag and drop them in the designated area on the site.
  2. Click on "Convert to FLAC"
  3. Let the site convert your MP3 file to FLAC, then download it right after.

Converter.org works well with all the major browsers; go ahead and try us!

What happens when MP3 becomes FLAC

Source format

MP3 is a widely supported lossy audio format.

Target format

FLAC compresses audio without discarding decoded sample data.

What changes

Audio samples are decoded from MP3 and encoded according to the FLAC format and selected bitrate or quality.

What is preserved
Duration and audible content are preserved, subject to decoder support and any settings you change.
What may be lost
Tags, embedded artwork, chapters, and codec-specific metadata may not map to FLAC.
Codec and quality implications
Writing FLAC without further lossy compression avoids additional codec loss, but it does not restore detail discarded by the MP3 encoding.
Realistic limitations
Protected audio, malformed headers, unsupported codec variants, or files without a decodable audio stream cannot be converted.

Conversion steps

  1. Upload a MP3 file no larger than 1 GB.
  2. Confirm that FLAC is selected as the target.
  3. Start the conversion. A healthy compatible worker begins processing immediately.
  4. Download the FLAC file and check the result before deleting your source.

Troubleshooting

The MP3 file is rejected or will not open.
Confirm that the file is not empty, password-protected, or corrupt and that its real format matches the extension.
The FLAC file is larger than expected.
Choose a more efficient codec or lower quality setting when available. Lossless and uncompressed targets are often larger by design.
The result has no sound or will not play.
Try a broadly supported target codec and verify that the source contains a decodable audio stream.

Privacy and file retention

Uploads and converted files are processed automatically and irreversibly deleted within 24 hours. You can delete them sooner with the delete control. Convertr does not read, mine, sell, or manually review file contents.

Read the privacy policy