title: How accurate is using millimeters in CSS?
body: <p>I'm trying to use <code>mm</code> in CSS as opposed to the standard <code>px</code>.</p>
  
  <p>first is this even possible?</p>
  
  <p>if so, can i use it like this:</p>
  
  <pre><code>#div{
  width:200mm;
  height:100mm;
  }
  </code></pre>
  
  <p>I did try to convert the millimeters to pixels so I can use the pixels value but every converter returns a different value which is strange. even Photoshop converts it and gives me a different value. </p>
  
  <p>Could someone please advise on this issue?</p>