title: Converting from dp to px in android
body: <p>I found this in the Android documentation: </p>
  
  <blockquote>
    <p>The conversion of dp units to screen pixels is simple: <code>px = dp * (dpi / 160)</code></p>
  </blockquote>
  
  <p>But I don't understand what <code>dpi</code> is and how it is calculated. Any help?</p>