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Convert.mp3 · .wav · .m4a · .aac

Convert audio to FLAC online

100% localFiles never leave your device — no upload, no account, no tracking.
About Audio to FLAC

Convert audio into FLAC, the lossless codec that keeps full quality while taking up noticeably less space than WAV. Drop in an MP3, WAV, M4A, AAC, or OGG and we encode FLAC locally, ideal for archiving (note that lossy sources can't regain quality already lost).

The conversion runs entirely in your browser via WebAssembly. Your audio never leaves your device and nothing is uploaded.

How it works
  1. 01

    Add an audio file

    Drop your audio file onto the page or pick it from your device.

  2. 02

    Convert

    Click Convert to encode a lossless FLAC locally.

  3. 03

    Download

    Save the FLAC file.

Features
lossless compressionarchival qualitysmaller than wav
Frequently asked
How does the Audio to FLAC converter work?
Convert audio into FLAC, the lossless codec that keeps full quality while taking up noticeably less space than WAV. Drop in an MP3, WAV, M4A, AAC, or OGG and we encode FLAC locally, ideal for archiving (note that lossy sources can't regain quality already lost).
Are my files uploaded to a server?
No. Everything runs entirely in your browser using local JavaScript and WebAssembly. Your files never leave your device.
Does it cost anything or require an account?
No. The converter is free, needs no sign-up, and runs locally in your browser.
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