Free online FLAC to BWF converter

Source format: flac

FLAC stands for Free Lossless Audio Codec. It is a widely used lossless audio format, meaning it compresses audio without removing any sound data. FLAC is popular with music collectors, archivists, audiophiles, and anyone who wants smaller files than WAV or AIFF while preserving full audio quality. It is commonly used for music libraries, archival masters, and distribution of high-quality audio.

Target format: bwf

BWF, or Broadcast Wave Format, is an extension of the WAV audio format used in professional audio, broadcasting, film, and post-production. Its main advantage is support for metadata such as time reference, originator information, and production notes, which makes it useful for archiving and exchanging audio in professional workflows. BWF is typically used for recording, editing, and long-term storage where compatibility with broadcast and studio tools matters.

How to convert flac to bwf

The most reliable way to convert .flac to .bwf is with FFmpeg, because it preserves the audio data while writing a Broadcast Wave container. If you prefer a graphical workflow, audio editors such as Audacity or professional DAWs may also export BWF/WAV-compatible files, but FFmpeg is usually the simplest and most precise option for batch conversion.

1. Install FFmpeg if it is not already available on your system.
2. Open a terminal or command prompt in the folder containing the FLAC file.
3. Run a command such as ffmpeg -i input.flac -c:a pcm_s24le output.bwf.
4. If you need 16-bit audio instead, use ffmpeg -i input.flac -c:a pcm_s16le output.bwf.
5. Check the resulting file in a BWF-aware editor or player to confirm the audio and metadata are correct.

If you want to convert online, you can use the 101convert.com website for free without installing any software.

In Audacity, the general workflow is to open the FLAC file, then choose File → Export → Export as WAV and select a Broadcast Wave-compatible WAV/BWF option if available in your version or export settings. Some applications label BWF simply as WAV while still writing Broadcast Wave metadata.

Notes on quality and compatibility

FLAC to BWF is a lossless conversion as long as you export to PCM audio, so the sound quality is preserved. However, the file size will usually increase significantly because BWF is typically uncompressed. If your source FLAC contains metadata, not all tags may transfer perfectly into BWF, since BWF supports a different metadata model than FLAC.

Compatibility is generally excellent in professional audio software, but some consumer players may treat BWF as a plain WAV file or may not display BWF-specific metadata. For best interoperability, keep the sample rate, bit depth, and channel count unchanged unless you specifically need a different mastering format. If the source FLAC is already compressed from a lossy origin, converting it to BWF will not restore lost audio detail; it only preserves the current decoded audio exactly.