Steps I follow:
android:pathData
replaced with d
android:fillColor
replaced with fill
android:strokeColor
replaced with stroke
android:strokeWidth
replaced with stroke-width
android:fillType
replaced with fill-rule
A path in the VectorDrawable without fillColor
is fill="none"
in SVG.
android:viewportHeight="24" android:viewportWidth="24"
is viewBox="0 0 24 24"
in SVG.
Example
Vector Drawable
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportHeight="24"
android:viewportWidth="24">
<path
android:fillColor="#ffffff"
android:pathData="M12,3L2,12h3v8h2.5v-0.8c0-1.5,3-2.2,4.5-2.2s4.5,0.8,4.5,2.2V20H19v-8h3L12,3zM12,15.2c1.2,0-2.2-1-2.2-2.2 s1-2.2,2.2-2.2s2.2,1,2.2,2.2S13.2,15.2,12,15.2z" />
<path android:pathData="M0,0h24v24H0V0z" />
</vector>
SVG
<svg xmlns="http://www.w3.org/2000/svg"
width="24"
height="24"
viewBox="0 0 24 24" >
<path
fill="#ffffff"
d="M12,3L2,12h3v8h2.5v-0.8c0-1.5,3-2.2,4.5-2.2s4.5,0.8,4.5,2.2V20H19v8h3L12,3zM12,15.2c1.2,0-2.2-1-2.2-2.2 s1-2.2,2.2-2.2s2.2,1,2.2,2.2S13.2,15.2,12,15.2z" />
<path d="M0,0h24v24H0V0z" fill="none"/>
</svg>