Lossless compression for audio: about half the size of a WAV, with every sample bit-for-bit intact. It's what people archive CDs into and what hi-res download stores sell. If a conversion starts from FLAC, it's starting from a perfect copy.

Every conversion below runs in this page, on your own machine. Nothing is uploaded, there is no queue, and there is no account to make. Pick a target format, or just drop a FLAC file above and choose afterwards.