I have a SVG file that has a defined size of 16x16. When I use ImageMagick\'s convert program to convert it into a PNG, then I get a 16x16 pixel PNG which is way too small:<
After following the steps in Jose Alban's answer, I was able to get ImageMagick to work just fine using the following command:
convert -density 1536 -background none -resize 100x100 input.svg output-100.png
The number 1536 comes from a ballpark estimate of density, see this answer for more information.