android:textSize Since: API Level Size of the text. Recommended dimension type for text is "sp" for scaled-pixels (example: 15sp). Must be a dimension value, which is a floating point number appended with a unit such as " 14.5sp ". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters). This may also be a reference to a resource (in the form " @[ package :] type : name ") or theme attribute (in the form " ?[ package :][ type :] name ") containing a value of this type. This corresponds to the global attribute resource symbol textSize .