Yes! Convert999 works on any device with a web browser — iPhone, Android, iPad, or desktop. No app installation required. Simply open the converter, upload your RM file, and download the converted MKV file.
Will I lose quality converting RM to MKV?
Convert999 uses high-quality conversion algorithms to minimize quality loss. For lossless formats, the conversion is exact. For lossy formats like images and audio, we use optimized settings that balance quality and file size.
Can I batch convert multiple RM files to MKV?
Yes, Convert999 supports batch conversion. Select or drag & drop multiple RM files and convert them all to MKV format at once. Each file is processed locally in your browser.
What is the difference between RM and MKV?
RealMedia (RM) and Matroska Video (MKV) differ in compression, compatibility, and features. RM is optimized for its native use cases, while MKV may offer different advantages. Visit our RM vs MKV comparison page for a detailed breakdown.
Why Convert RM to MKV?
Advantages
✓Matroska Video offers better compatibility with modern applications and workflows
✓Converting is completely free with no file size limits on Convert999
✓Your files never leave your device — 100% private and secure conversion
✓Instant conversion without waiting for server processing
Key Differences
→RM (RealMedia) is optimized for its native use cases
→MKV (Matroska Video) may offer different compression or feature set
→Choose based on your target platform, quality needs, and file size requirements