WMA to FLAC

To convert WMA to FLAC, drag your WMA files onto the drop area on this page, or click it to choose them from your device. Conversion starts automatically as soon as the files are added, and each finished FLAC appears as its own row with a Download button. There is no bitrate setting because FLAC is lossless. You can add several WMA files at once; they are converted one after another, and every row shows the new filename, its size and an inline preview player so you can listen before downloading. The whole conversion runs inside your browser using a WebAssembly build of FFmpeg, so your audio is never uploaded anywhere.

No, converting WMA to FLAC cannot improve the sound quality, because WMA is a lossy format and the detail discarded by the original WMA encoder is permanently gone, so FLAC can only preserve exactly what the WMA already contains rather than recover anything the original encode threw away. What you do gain is that the audio is lossless from this point on, with no further generation loss if you re-encode or edit later. That is the real reason to move a WMA collection into FLAC: compatibility and a stable archive, not restored fidelity.

Your WMA files will not play on an iPhone or car stereo because WMA is a Microsoft format that Apple, Android and car audio manufacturers never widely adopted, so those devices simply have no WMA decoder built in and either refuse to open the file or skip it silently. FLAC is supported by almost every modern player, phone and media app, which is why converting is usually the quickest fix. If you would rather have smaller files than lossless ones, converting WMA to MP3 or M4A works too.

No, your WMA files are never uploaded anywhere, because this converter runs a WebAssembly build of FFmpeg entirely inside your own browser, meaning the audio never leaves your device, which makes it safe for private interviews, voice memos and confidential recordings, and the whole tool is free with no signup. There is no queue and no upload wait, since the work happens locally. The converter itself is a one-time download of about 32 MB, which your browser then caches so later conversions start instantly.

There is no file size limit imposed by this site on WMA to FLAC conversions, because your files are never uploaded and the only real ceiling is how much memory your own device can spare, which is usually far more generous than the caps on upload-based conversion services. Very large files, roughly over a few hundred megabytes, can be slow or exhaust memory on a phone. For long recordings such as lectures or full concert rips, use a desktop browser.

There is no bitrate setting for FLAC because FLAC is a lossless codec that compresses audio without discarding any of it, so a bitrate choice would be meaningless, and the 96 to 320 kbps options only appear when you pick a lossy output format such as MP3, AAC, M4A or OGG. The same applies to the other lossless outputs here, WAV and AIFF. With FLAC selected you simply convert and get a faithful copy of the WMA audio.

Your FLAC files will be considerably larger than the original WMA, often several times the size, because WMA is a compact lossy format while FLAC stores every sample losslessly at roughly 50 to 60 percent of uncompressed WAV size, so you are trading disk space for a lossless copy. The exact ratio depends on the bitrate of your source WMA and on the music itself. If storage matters more than archival quality, MP3 or AAC at 192 kbps will stay much closer to the original file size.