VOC to FLAC Converter

How to Convert VOC to FLAC Online

1. Upload Your VOC File: Drag and drop or click "Add Files" to select.voc files from your computer. Sound Blaster recordings, DOSBox captures from games like Eye of the Beholder, and old Creative Voice Editor exports all work. Batch is supported — archive an entire folder of vintage clips in one pass.
2. Pick Compression Level: The slider runs 1-12 (12 = strongest compression, default). Higher levels produce smaller files without touching audio fidelity — FLAC is lossless at every level. The only tradeoff is encoder time: level 12 is slower than level 5 but typically only ~2-3% smaller, so 8-12 is a sweet spot for archival.
3. Set Audio Channel, Sample Rate, and Trim (Optional): Leave Audio Channel and Audio Sample Rate on "Original" to preserve the source exactly (recommended for archival). Force mono if the VOC was a mono recording mistakenly stored as stereo. Use the Trim section to clip silence or extract a section in HH:MM:SS.sss format.
4. Convert and Download: Click Convert. Files process on our servers and download individually or as a ZIP — no sign-up, no watermark.

Why Convert VOC to FLAC?

VOC (Creative Voice File) is the proprietary digital audio container Creative Technology shipped with the original Sound Blaster card in 1989. It was the de facto sound format in DOS-era PC games and multimedia titles, but it faded fast once Microsoft made RIFF WAVE the Windows standard. Modern players, DAWs, and OSes generally don't recognize.voc natively. FLAC (Free Lossless Audio Codec), released 20 July 2001, is the open, bit-perfect archival format the U.S. National Archives lists as a preferred audio format. Converting VOC → FLAC is the standard move for keeping vintage PC audio playable forever without quality loss.

• Modern playback everywhere — FLAC plays in VLC, foobar2000, Winamp, Windows 10+ Media Player, macOS, iOS 11+, Android, and most car head units. VOC requires legacy players or conversion tools that may not survive the next OS upgrade.
• Lossless archival — FLAC's decoder produces bit-identical PCM to the source, so you can re-encode to MP3/AAC later without compounding loss. The National Archives and Records Administration lists FLAC among preferred audio formats for preservation.
• Smaller than WAV, same fidelity — A 50 MB raw PCM file typically compresses to 25-35 MB as FLAC (50-70% of original), per the FLAC project. VOC uses simple PCM/ADPCM blocks; FLAC's predictive coding crushes the redundancy.
• Retro gaming and demoscene preservation — DOSBox, ScummVM, and emulator audio captures often dump to VOC because that's what the Sound Blaster emulation wrote. Converting to FLAC makes those captures shareable on archive.org, Internet Archive, and modding forums.
• Library consolidation — Music players (Plex, Jellyfin, Roon, Apple Music, Foobar) index FLAC cleanly with tags; most ignore.voc entirely. One conversion pass and your Sound Blaster archive joins the rest of your library.
• Future-proof against codec rot — VOC is no longer actively maintained. FLAC is an IETF standard (RFC 9639, 2024) with reference encoder, open-source decoders, and broad institutional adoption.

VOC vs FLAC — Format Comparison

FLAC Compression Level Guide

Because FLAC is lossless, every compression level produces a decoder output bit-identical to the source. Picking a higher level never affects fidelity — it just spends more CPU to shave a few extra percent off the file.

Frequently Asked Questions

Will converting VOC to FLAC improve the audio quality?

No — FLAC is lossless, which means the decoded waveform is bit-identical to whatever was in the VOC file. If the source was an 8-bit, 11 kHz Sound Blaster recording, the FLAC will decode back to that exact 8-bit, 11 kHz signal. FLAC's value here is preservation and modern compatibility, not enhancement. If you want perceptual cleanup (noise reduction, click removal), use a dedicated audio editor before encoding.

Why pick FLAC instead of WAV for converting my VOC files?

Both are lossless. WAV is uncompressed PCM, so it'll be the same size as the decoded VOC (often 5-10 MB per minute of CD-quality stereo). FLAC stores the same audio at roughly 50-70% of that size with no quality cost, plus it supports proper tag metadata (artist, title, comments, embedded album art) that WAV handles poorly. For archival and library use, FLAC wins. If you need a quick edit pass in older software, VOC to WAV might be more convenient.

Does XConvert handle 8-bit, 16-bit, mu-law, and A-law VOC variants?

Yes. The VOC container can carry unsigned 8-bit PCM (the original Sound Blaster format), 16-bit PCM (Sound Blaster 16 and later), and companded A-law / mu-law codecs. FFmpeg-based decoding handles all of these and writes the result to FLAC at the native sample rate and bit depth, so an 8-bit, 11 kHz VOC stays 8-bit / 11 kHz in the FLAC.

What compression level should I pick?

Level 12 (XConvert's maximum) for archival — it gives the smallest file with zero quality cost. The difference between level 5 and level 12 is usually 2-5% file size, so use the highest level your patience allows. Encoding is one-time work; the smaller file is forever.

Will my VOC's loops, markers, and ASCII string blocks survive?

Partially. The VOC container has block types for repeat loops, silence segments, and embedded ASCII strings — features used by Creative Voice Editor and some DOS games. Standard decoders flatten these into a single linear PCM stream when converting to FLAC, so the audio is preserved but the loop markers and embedded text typically aren't. If you need those, decode to WAV with a VOC-aware tool first, then re-encode.

Can I convert a batch of Sound Blaster recordings at once?

Yes. Drag in your entire folder of.voc files. They process in parallel on our servers and download as a ZIP or individually. Settings (compression level, channel, sample rate) apply uniformly — useful when you're standardizing a whole DOSBox capture archive.

Why is my VOC so much smaller than the FLAC?

If your VOC uses ADPCM (Creative ADPCM is lossy, ~4:1 compression), the decoded PCM is 4× larger before FLAC re-compresses it. FLAC then losslessly halves that, but you may still end up with a FLAC bigger than the original ADPCM VOC. That's expected: you're trading a small, lossy file for a lossless one with broad modern support. If size matters more than fidelity, VOC to MP3 is a better choice.

Can I trim silence or extract a section while converting?

Yes. Open the Trim section, set a start time and duration (both accept seconds like 12.5 or HH:MM:SS.sss like 00:00:30.500). Handy for clipping the dead air at the start of DOSBox captures or pulling one cue out of a long recording session. For more advanced edits, the Audio Cutter tool gives a visual waveform.

Is FLAC really the best long-term archival format?

It's one of the most defensible choices. The U.S. National Archives and Records Administration lists FLAC among its preferred audio preservation formats, the spec was standardized by the IETF as RFC 9639 in 2024, the reference encoder is open-source (Xiph.Org), and decoders ship on every major OS. Compared to vendor-controlled formats like VOC, FLAC's longevity is institutionally backed rather than tied to a single company's product line.