FLAC to MP3 Converter
FREE
Convert FLAC to MP3 online free in your browser. Fast FLAC to MP3 converter with adjustable bitrate — no server upload required.
Drop MP3 file here or
FLAC is lossless compression of the decoded MP3 stream — it cannot restore quality lost in the original MP3 encode. Output is usually larger than the MP3.
First run downloads FFmpeg (~25 MB) once in this browser. Need the reverse? Try /flac-to-mp3.
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MP3 to FLAC converter online free
Convert MP3 to FLAC online free. Free MP3 to FLAC converter — turn MP3 into FLAC for archives and DAWs in your browser, no server upload.
What is an MP3 to FLAC converter?
An MP3 to FLAC converter (also searched as MP3 to FLAC conversion or MP3 to FLAC converter) re-encodes compressed MP3 into the FLAC container for players, DAWs, and archives that prefer FLAC. Note: converting MP3 to FLAC does not restore detail lost in the original MP3 encode — it stores the decoded audio losslessly going forward. This free tool runs locally with FFmpeg WebAssembly — no server upload.
MP3 to FLAC converter features
Free online MP3 to FLAC conversion in the browser.
Convert MP3 to FLAC online
Upload an .mp3 file and download FLAC with no software install.
MP3 to FLAC conversion
Change MP3 into FLAC when a workflow or device expects .flac.
MP3 and FLAC workflows
Bridge MP3 libraries and FLAC-based archives or hi-res playlists.
Lossless FLAC output
Exports FLAC (lossless compression) from the decoded MP3 stream.
No server upload
Conversion runs locally with FFmpeg WebAssembly for privacy.
Simple download flow
Download the converted FLAC as soon as processing finishes.
How to convert MP3 to FLAC
How to run MP3 to FLAC conversion online in three steps.
Upload MP3 file
Drop your .mp3 audio file (up to 200 MB).
Convert to FLAC
Click Convert to FLAC and wait for local FFmpeg processing.
Download FLAC
Save the .flac file for playback, editing, or archive.
Great for
Common MP3 to FLAC and MP3 in FLAC use cases.
Format compatibility
Put MP3 tracks into FLAC when a library or player prefers .flac.
DAW and editor import
Convert MP3 to FLAC before cutting, EQ, or mixing in tools that like FLAC.
Archive handoff
Store a lossless FLAC copy of decoded MP3 for further lossless edits.
Playlist migration
Move tracks from MP3 collections into FLAC-centric music libraries.
Frequently Asked Questions
Quick answers about this tool—open a question to read more.