How to Convert SOU to VOX — Quick & Free
Fast, instant SOU to VOX conversion. No signup required. Just drop your .sou file and get .vox in seconds.
Batch Settings
About SOU to VOX Conversion
Short answer: yes, you can convert SOU to VOX online for free, and quality is well preserved with the right settings. Just upload your .sou file to CocoConvert, pick VOX as the output, and click Convert. The whole process takes seconds.
Now for the details. SOU is a widely used file format. VOX is a widely used file format. Converting between these two formats lets you convert between formats quickly.
Your SOU file is decoded and re-encoded as VOX. Converting SOU to VOX 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 SOU to VOX
- 1
1. Upload SOU
Drop your .sou file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select VOX
Choose .vox 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 .vox file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert SOU to VOX
Your SOU file is decoded and re-encoded as VOX.
Your SOU file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in VOX format
The converted file is ready for download
Format Comparison
SOU
.sou file
| Extension | .sou |
| MIME Type | audio/x-sou |
| Category | Audio |
VOX
.vox file
| Extension | .vox |
| MIME Type | audio/x-vox |
| Category | Audio |
Should You Convert SOU to VOX?
When to Convert
- ✓When you need a VOX file
Frequently Asked Questions
Is SOU to VOX conversion free?
Yes. CocoConvert offers free SOU to VOX 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 SOU to VOX 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 SOU file and the converted VOX file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting SOU to VOX lose quality?
Converting SOU to VOX maintains high quality with CocoConvert's optimised encoder settings.
Can I convert VOX back to SOU?
Yes, CocoConvert supports VOX to SOU conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.