What is the default text size on Android?

android text-size

In general:

Three "default" textSize values:

 - 14sp - 18sp - 22sp

These values are defined within the following TextAppearances:

 - TextAppearance.Small - TextAppearance.Medium - TextAppearance.Large

More information about Typography can be found in the design guidelines

New guidelines related to font and typefaces. The standard rule of 14sp remains (body).

Examples how to set textappearances

AppCompat version:

android:textAppearance="@style/TextAppearance.AppCompat.Body"

Lollipop and up version:

android:textAppearance="@android:style/TextAppearance.Material.Body"

android text-size

There someone discovered the default text size, for TextViews (which use TextAppearance.Small) it's 14sp.

android text-size

This will return default size of text on button in pixels.

val size = Button(this).textSize

float size = new Button(this).getTextSize();