MP3 to FLAC Converter

Transcode, downsample, or convert local audio files between varying extensions in bulk.
100% Free & Private — All processing happens locally on your device!
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Drop Audio Files to Convert

Strictly supports MP3 files.

🔄 Need to do the exact opposite? Try our FLAC to MP3 Converter

Convert MP3 to FLAC Offline & Free

Compatibility issues with audio formats can disrupt your workflow. Our MP3 to FLAC Audio Transcoder provides a frictionless solution to make your audio files playable on any device, stereo system, or media software. By converting your MP3 files into the widely supported FLAC format, you ensure maximum cross-platform compatibility.

Zero-Upload Security: Your proprietary audio recordings belong to you. Cloud-based converters force you to upload your files, creating a massive privacy risk. We engineered this converter to run locally via HTML5 and WebAssembly APIs. When you convert MP3 to FLAC, the data never leaves your computer, ensuring total confidentiality.

Customizable Bitrate & Quality: You maintain complete creative control over the output. Before converting, you can tweak the audio bitrate and frequency settings to prioritize either an ultra-compact file size or pristine studio quality. The resulting FLAC file is instantly available for download the moment the local encoding finishes.

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Frequently Asked Questions

Does converting MP3 to FLAC restore CD quality? +
No. MP3 is a lossy format, meaning data was permanently deleted during its creation to reduce file size. Converting an MP3 to a lossless FLAC file will not magically restore the missing audio data; it will just create a larger file that sounds exactly like the MP3.
Why would someone use this tool then? +
Sometimes, specific audio hardware, DJ software, or archival systems require audio files to be strictly in a lossless container format like FLAC or WAV to satisfy system requirements or prevent further compression generation loss.
Is my music uploaded during the conversion? +
No, the conversion is handled entirely locally inside your browser. Your music files remain completely private and secure.