RunConvert

VOC to FLAC Converter

Convert VOC to FLAC online for free. Fast, secure, and high-quality conversion with no sign-up or software required.

Free to useNo file stored beyond 1 hourEncrypted over TLS 1.2/1.3No watermarks

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

01

Upload your file

Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

02

Choose an output format

Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

03

Convert & download

Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is a VOC file?

The Creative Voice (VOC) file format is a legacy audio standard developed by Creative Technology specifically for the Sound Blaster series of hardware sound cards in the 1990s. The file structure comprises a 26-byte header followed by a sequence of data blocks containing audio information, typically encoded in 8-bit Pulse Code Modulation (PCM) or varying forms of ADPCM (Adaptive Differential Pulse Code Modulation). It was historically used to store digitized voice data and sound effects in MS-DOS environments.

How to open a VOC file

Modern operating systems do not natively support the proprietary VOC format. Playback and conversion require specialized audio editing software or robust media players. Audacity (using the FFmpeg library) allows for importing and converting VOC data to modern standards, while VLC Media Player and Nullsoft Winamp offer playback capabilities.

VOC Technical Info

Full Name
Creative Voice File
Developed By
Creative Technology
Initial Release
1990
MIME Type
audio/x-voc

What is a FLAC file?

The Free Lossless Audio Codec (FLAC) is an open-source audio coding format developed by the Xiph.Org Foundation that compresses digital audio without any loss of data (bit-perfect preservation). It employs linear prediction and Rice coding (Golomb-Rice) rather than the perceptual psychoacoustic modeling used in MP3 or AAC. The format structure consists of the 'fLaC' stream marker, metadata blocks (Streaminfo, Vorbis comments for tags, Seekpoints), and audio frames, typically achieving compression ratios of 50-70% compared to raw PCM WAV files.

How to open a FLAC file

FLAC enjoys extensive native support on modern platforms, including Windows 10/11, Android, and macOS (starting with macOS High Sierra). For older systems or advanced playback control, software such as Foobar2000 (Windows) or Vox (macOS) is recommended. The VLC media player is a universal solution for all operating systems, handling FLAC streams and associated metadata seamlessly.

FLAC Technical Info

Full Name
Free Lossless Audio Codec
Developed By
Josh Coalson / Xiph.Org Foundation
Initial Release
2001
MIME Type
audio/flac

Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

Convert VOC to FLAC in seconds

Every VOC to FLAC conversion runs on our servers, so your device stays fast and the output quality stays intact.

Fast, cloud-powered

No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

Secure & private

Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

Free - no account needed

Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

Developer API

Convert VOC to FLAC via API

Automate VOC to FLAC conversions in three steps: create a job, upload your file, then poll for the result.

# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tag": "voc-to-flac",
    "tasks": {
      "upload-file": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "convert",
        "input": "upload-file",
        "output_format": "flac"
      },
      "export-result": {
        "operation": "export/url",
        "input": "convert"
      }
    }
  }'

# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.voc

# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
  -H "Authorization: Bearer YOUR_API_KEY"

Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.