# Scalable pixels (sp): what it is and how it works
> Scalable pixels, or sp, are units used in Android to express text sizes that account for density and font size preferences.
URL: https://www.zorraquino.com/en/dictionary/internet/scalable-pixels-or-sp.html

# Scalable pixels (sp)

Scalable pixels, or sp, are units used in Android to express text sizes that account for density and font size preferences. They allow typography to respond to those settings

What it means, how it is used and where it comes up, with its related concepts.

[The whole glossary](https://www.zorraquino.com/en/dictionary)

## What it is and how it works

Scaling should not always be assumed to be linear. The interface needs testing with enlarged text to detect clipping, overlaps or inaccessible actions. Spaces and components require their own sizing criteria; defining typography in sp does not in itself resolve the accessibility of the layout.

Also known as

sp, Scale-independent pixels

Topics

[Technology and data](https://www.zorraquino.com/en/dictionary/category/tecnologia-y-datos)

## Related concepts

- [Density-independent pixels (dp)](https://www.zorraquino.com/en/dictionary/ux/dips-or-dp.html)
- [Points (pt)](https://www.zorraquino.com/en/dictionary/internet/points-or-pts.html)
- [Digital accessibility](https://www.zorraquino.com/en/dictionary/digital-accessibility)