Scale factor for xxhdpi android?

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In android.util.DisplayMetrics, you can see that scaling factor is 0.00625:

/**
 * 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;

Where as DENSITY_DEFAULT is 160 –> scaling factor = 1.0f / 160 = 0.00625.

sizeScale = DENSITY_DEFAULT_SCALE * DENSITY_DPI

From this:

  • ldpi = 0.00625 * 120 -> 0.75
  • mdpi = 0.00625 * 160 -> 1.0
  • hdpi = 0.00625 * 240 -> 1.5
  • xhdpi = 0.00625 * 320 -> 2.0
  • xxhdpi = 0.00625 * 480 -> 3.0
  • xxxhdpi = 0.00625 * 640 -> 4.0

Not exactly a rocket science, but hope this will be useful for someone 🙂

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