Absolute units have predefined meanings or real-world equivalents. They will always have the same size. With the exception of pixels, they are not appropriate for web pages that appear on screens.
- px - pixel, defined as equal to 1/96 of an inch in CSS3.
- in - inches.
- mm - millimetres.
- cm - centimetres.
- q - 1/4 of a millimetre.
- pt - points (1/72 inches). Commonly used in print design.
- pc - picas (1 pica = 12 points or 1/6 on an inch). Commonly used in print design.