MP3 audio
A universally supported compressed audio format.
Best for music, podcasts, voice, and compact audio delivery.
MP3 to FLAC
Creates a FLAC copy of MP3 audio for editors and devices that require it. Add your files, convert them in one batch, and download each FLAC directly.
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How to convert MP3 to FLAC
The converter runs in your browser and an isolated processing queue. Nothing to install, and every upload is scanned for malware before it is processed.
- 1Add your MP3 filesDrop MP3 files into the converter or choose them from your device. Guest files can be up to 25 MB each.
- 2Choose FLACSet FLAC as the output for the whole batch, then change individual files if needed.
- 3Convert and downloadStart the batch and download each FLAC directly, or save it to your workspace to get a permanent link.
FLAC audio
A lossless compressed audio format that preserves the original samples.
Best for music archives and high-quality listening.
MP3 to FLAC
What to expect from MP3 to FLAC
What changes in the file, and what to check before you share the result.
Bigger file, same sound
FLAC is lossless, but it cannot restore what MP3 compression removed. Convert when an editor or device requires FLAC, not to improve quality.
Why FLAC
FLAC is popular for music libraries and archives.
MP3 to FLAC questions
Short answers about limits, privacy, and keeping the converted file.
Does MP3 to FLAC improve sound quality?
No. The FLAC sounds the same as the MP3 and takes more space. It helps when a program only accepts FLAC.
Is the MP3 to FLAC converter free?
Yes. Without an account you can convert up to 10 files a day, 2 at a time, up to 25 MB each. A free account adds monthly conversion credits and larger files.
How long are my files kept?
Guest uploads and results are deleted automatically after 1 hour. Conversions stay temporary when you are signed in too, unless you save a result to your workspace.
Can I get a permanent link to the FLAC file?
Yes. Save the result to a SteadyLink workspace and it gets a stable link. If you make a new version later, replace the file and the link stays the same.
Browse by file type
Each category has its own converter, format list, and common routes.
Images
JPG, PNG, WebP, AVIF, GIF, TIFF, BMP, HEIC, ICO, SVG
Documents
DOC, DOCX, ODT, RTF, TXT, HTML, PDF
Spreadsheets
XLS, XLSX, ODS, CSV, PDF
Presentations
PPT, PPTX, ODP, PDF
PDF, DOCX, JPG, PNG, TXT
Audio
MP3, WAV, AAC, FLAC, OGG, M4A, Opus
Video
MP4, WebM, MOV, AVI, MKV, GIF, MP3
Archives
ZIP, TAR, TAR.GZ, 7Z
Ebooks
EPUB, MOBI, AZW3, PDF, TXT
Keep the useful ones.
Conversions remain temporary even when you are signed in, so save a result to your workspace when you want a stable URL and revision history.
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