Free online VOC to FLAC converter

Source format

VOC is an older audio file format originally associated with Creative Labs Sound Blaster hardware and early DOS-era software. It was commonly used for short sound effects, voice clips, and simple sampled audio in games and multimedia applications. VOC files may contain 8-bit PCM audio, silence blocks, and other legacy block types, so they are mainly encountered when working with archived game assets or retro audio collections.

Target format

FLAC stands for Free Lossless Audio Codec. It is a widely supported, open, lossless audio format that compresses audio without removing any data from the source signal. FLAC is popular for archiving, music libraries, and audio workflows where preserving original quality matters. Compared with VOC, FLAC is much more compatible with modern players and editors and is better suited for long-term storage.

How to perform the conversion

The most reliable way to convert VOC to FLAC is with FFmpeg, a powerful command-line audio tool that supports many legacy formats.

1. Install FFmpeg on your computer.
2. Open a terminal or command prompt in the folder containing the VOC file.
3. Run a command such as ffmpeg -i input.voc output.flac.
4. Check the resulting FLAC file in an audio player or editor to confirm it opens correctly.

If the VOC file contains unusual legacy blocks or metadata, FFmpeg usually handles the decoding automatically. For batch conversion, you can repeat the same command for each file or use a script to process multiple VOC files at once.

If you prefer a graphical workflow, you can also open the VOC file in a desktop audio editor that supports legacy import, then use File → Export or File → Save as and choose FLAC as the output format. However, FFmpeg is typically the best choice for accuracy and broad format support.

Notes on quality and compatibility

VOC is usually already compressed very lightly or stored as low-bit-depth audio, so converting it to FLAC does not improve the original sound quality; it only preserves it in a modern lossless container. If the source VOC is 8-bit or low sample rate, the FLAC output will keep those limitations exactly.

Because FLAC is lossless, the conversion is safe for archiving: once decoded from VOC, the audio can be stored without further quality loss. Keep in mind that some VOC files may include silence segments or non-audio blocks, and these are typically preserved as decoded audio timing rather than as special VOC structures. Also, very old or corrupted VOC files may not decode perfectly in every program, so if one tool fails, trying FFmpeg is often the best fallback.