Recommended minimum sizes
You have to follow some simple recommendations for minimal sizes
of your UI elements, to provide easy to use user interface.
Minimal size of clickable areas
Recommended minimum size of touchable elements (as buttons, checkboxes,
switches, drag & drop items ...) is 48 dp
in both dimensions. Curious why
this magical number? There is simple explanation
This size in dp
is translated approximately to 9mm in physical size, which
seamlessly fits in widely recommended range 7-10mm for touchable elements.
Minimal font size on Android
Minimal readable font size is 12 sp
, but it is highly recommended to use at least 14
for your main texts. In guidelines 12 sp
text is noticed as micro and is suitable
only for insignificant supplementary texts.