title: How do I determine the zoom level of a LatLngBounds before using map.fitBounds?
body: <p>I am trying to figure out a way of determining the zoom level of a Map before I call map.fitBounds(), and I cannot seem to find a way.</p>
  
  <p>In the API v2 there was a method <a href="https://developers.google.com/maps/documentation/javascript/v2/reference#GMap2.Methods.Map-State" rel="noreferrer"><code>GMap.getBoundsZoomLevel(bounds:GLatLngBounds)</code></a>, but I can't find an equivalent in the API v3 documentation.</p>
  
  <p>Is there a non-Google algorythm for determining what a zoom level will be beforehand?</p>