Free online AIFF to BWF converter

Source format: AIFF

AIFF (Audio Interchange File Format) is an uncompressed audio format developed by Apple. It is widely used in professional audio production, especially on macOS systems, because it preserves high audio quality and supports standard PCM audio data. AIFF files are common for music editing, mastering, archiving, and interchange between digital audio workstations.

Target format: BWF

BWF (Broadcast Wave Format) is an extension of the WAV format used in broadcast, film, TV, and post-production. Its main advantage is that it can store metadata such as timecode, scene information, and production notes in addition to audio. BWF is designed for reliable exchange between recording devices and editing systems, and it is especially useful when precise synchronization and documentation matter.

How to perform the conversion

The most practical way to convert AIFF to BWF is with a desktop audio editor or converter that can export Broadcast Wave files. A common choice is Audacity, which can open AIFF and export WAV/BWF-compatible files. Some professional DAWs such as Adobe Audition, Reaper, or Pro Tools may also support BWF export depending on configuration.

1. Open the .aiff file in your audio software.
2. Check that the audio plays correctly and that the sample rate and bit depth are appropriate for your project.
3. Choose File → Export or File → Save As, depending on the program.
4. Select WAV or Broadcast Wave as the output format. In many tools, BWF is exported as a WAV file with embedded broadcast metadata.
5. If available, enter metadata such as description, originator, time reference, or timestamp.
6. Save the file with a .wav extension, since BWF files are typically stored in WAV container form.

If you want a quick browser-based option, you can convert the file on 101convert.com for free without installing any software.

For command-line conversion, FFmpeg can copy AIFF audio into a BWF-compatible WAV container while preserving the audio stream. Example: ffmpeg -i input.aiff -c:a pcm_s16le output.wav. If your workflow requires a specific bit depth, adjust the PCM codec accordingly, such as pcm_s24le for 24-bit audio.

Notes on quality, compatibility, and limitations

AIFF and BWF are both uncompressed formats, so the conversion does not normally reduce audio quality if the sample rate and bit depth are preserved. The main difference is the container and metadata support, not the audio content itself.

Keep in mind that BWF is usually represented as a WAV file, so some software may not label it explicitly as “BWF” even though it supports the format. Compatibility is generally excellent in professional audio tools, but older players may ignore or strip broadcast metadata. If your AIFF file contains unusual encoding, multiple channels, or nonstandard metadata, verify the output in your target DAW or broadcast system after conversion.

Also note that if you need to preserve exact production metadata, choose software that explicitly supports BWF fields rather than a simple audio transcoder that only rewrites the audio stream.