How to Convert SPX to VOC — Quick & Free
Fast, instant SPEEX to VOC conversion. No signup required. Just drop your .spx file and get .voc in seconds.
Batch Settings
About SPEEX to VOC Conversion
Short answer: yes, you can convert SPX to VOC online for free, and quality is well preserved with the right settings. Just upload your .spx file to CocoConvert, pick VOC as the output, and click Convert. The whole process takes seconds.
Now for the details. SPX is a widely used file format. VOC is a widely used file format. Converting between these two formats lets you convert between formats quickly.
Your SPX file is decoded and re-encoded as VOC. Converting SPX to VOC maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert SPEEX to VOC
- 1
1. Upload SPX
Drop your .spx file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select VOC
Choose .voc from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .voc file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert SPEEX to VOC
Your SPX file is decoded and re-encoded as VOC.
Your SPX file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in VOC format
The converted file is ready for download
Format Comparison
Speex
.spx file
| Extension | .spx |
| MIME Type | audio/ogg |
| Category | Audio |
VOC
.voc file
| Extension | .voc |
| MIME Type | audio/x-voc |
| Category | Audio |
Should You Convert SPEEX to VOC?
When to Convert
- ✓When you need a VOC file
Frequently Asked Questions
Is SPX to VOC conversion free?
Yes. CocoConvert offers free SPX to VOC conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is SPX to VOC conversion?
Most files convert in 2–10 seconds depending on size. Large audio files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded SPX file and the converted VOC file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting SPX to VOC lose quality?
Converting SPX to VOC maintains high quality with CocoConvert's optimised encoder settings.
Can I convert VOC back to SPX?
Yes, CocoConvert supports VOC to SPX conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
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