WMA to SNDR Converter
Create MS-DOS SNDR sound files from WMA audio
Private and Secure
Your WMA uploads are processed securely and deleted immediately after conversion. SNDR output files are removed from our servers within 24 hours of creation.
Cloud-Powered Conversion
The WMA to SNDR conversion runs entirely on our servers — no need to install DOSBox, SoX, or any vintage DOS tools on your own machine.
Works on Any Device
Convert WMA to SNDR from any browser on desktop, laptop, tablet, or phone — no platform-specific software needed for this retro format conversion.
How to convert WMA to SNDR
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose sndr or any other format you need as a result (more than 200 formats supported)
Let the file convert and you can download your sndr file right afterwards
About formats
Frequently Asked Questions
SNDR is an early MS-DOS sound format that predates modern codecs entirely. DOS-based software expects SNDR — it cannot decode WMA, so conversion is the only path forward.
SoX handles SNDR on modern systems, DOSBox plays it in emulated environments, and original MS-DOS sound utilities from the early 1990s read SNDR natively without issues.
SNDR is a specific early DOS variant with its own header structure, distinct from Sun AU or Mac SND. It targets 8-bit PC speaker and Sound Blaster output of that era.
SNDR reflects early DOS hardware limits — typically 8-bit depth at modest sample rates. Expect voice-grade fidelity rather than modern music quality from this vintage format.
Yes — upload multiple WMA files in one session and convertio.co generates individual SNDR files for each, making it efficient to prepare audio for large retro computing projects.