Does magnitude return the amount of studs between points?

I am trying to find the distance between points and compare it with an integer which is the amount of studs.

magnitude = (part1.Vector3 - part2.Vector3).magnitude

if magnitude <= 3 then

 -- code
end

If magnitude doesnt return the distance measured in studs the above if statement would not run even if the distance is less than 3 studs.

So, Does magnitude return the amount of studs between points?