SVG icons can be converted into ICO format for use as favicons and app icons.
Step 1
Upload your SVG file.
Step 2
Choose your ICO size or multi-size output.
Step 3
Download your ICO file.
You can try the tool here:
/svg-to-ico
How to Convert SVG to ICO
Create ICO favicons from SVG files for websites and apps.
icons.io
Favicon