//px 2 vw - vh conversion tool

vwvh-conversion.scss

@function get-vw($object_width,$window_width:1440) {
	$vw: ($window_width * 0.01) * 1px;
	@return ($object_width / $vw) * 1vw;
}
@function get-vh($object_height,$window_height:768) {
	$vh: ($window_height * 0.01) * 1px;
	@return ($object_height / $vh) * 1vh;
}

added a default width and height so you can use the function just passing the value to compare with.
width: get-vw(200);
if you want to get a value using a different width (good for responsive layouts), you can use the second value
width: get-vw(100,320);