What absolute units of measurement exist in CSS?
Absolute units in CSS are units of measurement that do not depend on the screen, scale, or browser font settings. They always have a fixed physical size.
Main absolute units:
| Unit | Meaning | Size |
|---|---|---|
px | pixel | the smallest point on the screen (conceptual, but fixed for CSS) |
cm | centimeter | 1 cm |
mm | millimeter | 1 mm |
in | inch | 1in = 2.54 cm |
pt | point | 1pt = 1/72 inch |
pc | pica | 1pc = 12pt |
Key point
Although there are formally many absolute units, in real-world layout almost only px is used. The rest (cm, mm, in, pt, pc) are better suited to print or PDF, not interfaces.
In short: absolute units give a fixed size, but are mainly suitable where responsiveness does not matter. On the web they are used sparingly, with relative units (em, rem, %, vw, vh) usually preferred instead.
Short Answer
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