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copied!<p>In <a href="https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/util/DisplayMetrics.java" rel="noreferrer">android.util.DisplayMetrics</a>, you can see that scaling factor is <strong>0.00625</strong>:</p> <pre><code>/** * Scaling factor to convert a density in DPI units to the density scale. * @hide */ public static final float DENSITY_DEFAULT_SCALE = 1.0f / DENSITY_DEFAULT; </code></pre> <p>Where as <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_DEFAULT" rel="noreferrer">DENSITY_DEFAULT</a> is 160 --> scaling factor = 1.0f / 160 = 0.00625.</p> <pre><code>sizeScale = DENSITY_DEFAULT_SCALE * DENSITY_DPI </code></pre> <p>From this:</p> <ul> <li><strong>ldpi</strong> = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_LOW" rel="noreferrer">120</a> -> <strong>0.75</strong></li> <li><strong>mdpi</strong> = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_MEDIUM" rel="noreferrer">160</a> -> <strong>1.0</strong></li> <li><strong>hdpi</strong> = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_HIGH" rel="noreferrer">240</a> -> <strong>1.5</strong></li> <li><strong>xhdpi</strong> = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_XHIGH" rel="noreferrer">320</a> -> <strong>2.0</strong></li> <li><strong>xxhdpi</strong> = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_XXHIGH" rel="noreferrer">480</a> -> <strong>3.0</strong></li> <li><strong>xxxhdpi</strong> = 0.00625 * <a href="http://developer.android.com/reference/android/util/DisplayMetrics.html#DENSITY_XXXHIGH" rel="noreferrer">640</a> -> <strong>4.0</strong></li> </ul> <p>Not exactly a rocket science, but hope this will be useful for someone :)</p>

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