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Android — What is the difference between “px”, “dip”, “dp” and “sp”?

Snippets answered on November 27, 2022 Popularity 3/10 Helpfulness 7/10

answer Android — What is the difference between “px”, “dip”, “dp” and “sp”?

Android — What is the difference between “px”, “dip”, “dp” and “sp”?

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px
> Pixels — corresponds to actual pixels on the screen.
in
> Inches — based on the physical size of the screen.
> 1 Inch = 2.54 centimeters
mm
> Millimeters — based on the physical size of the screen.
pt
> Points — 1/72 of an inch based on the physical size of the screen.
dp or dip
> Density-independent Pixels — an abstract unit that is based on the 
physical density of the screen. These units are relative to a 160 dpi 
screen, so one dp is one pixel on a 160 dpi screen. The ratio of 
dp-to-pixel will change with the screen density, but not necessarily 
in direct proportion. Note: The compiler accepts both “dip” and “dp”, 
though “dp” is more consistent with “sp”.
sp
> Scaleable Pixels OR scale-independent pixels — this is like the dp 
unit, but it is also scaled by the user’s font size preference.
It is recommended you use this unit when specifying font sizes, so 
they will be adjusted for both the screen density and the user’s 
preference. Note, the Android documentation is inconsistent on what
sp actually stands for, one doc says "scale-independent pixels", 
the other says "scaleable pixels".

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Contributed on Nov 27 2022

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Android — What is the difference between “px”, “dip”, “dp” and “sp”?

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