offlinewebtools.com — free, watermark-free browser tools that stay on your device with nothing uploading to our servers

MP3 to FLAC Converter

Convert MP3 files to lossless FLAC format. Create high-quality archives of your audio collection with FLAC\'s lossless compression and metadata support.

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

Source file

Files are processed locally in your browser using WebAssembly.

Compression Level

Sample Rate (Hz)

Channels

Preserve Metadata

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.