I have a silly question - i am using double column style

\documentclass[english,a4paper,12pt, openany]{book}

When I add a figure I usually put in \columnwidth and just let LaTeX to stretch it to the full width. Now, for practical reasons I'd like to prepare some figures with fixed width in 1:1 ratio, but for that I'd like to know what the \columnwidth is in cm. Is there a way to find that number?

thanks, U

  • \printlen[5][cm{\columnwidth} for example, using package xprintlen
    – user31729
    Commented Nov 16, 2015 at 15:47

1 Answer 1


The xprintlen package provides the means to show the length of a dimension register in more 'human' units, such as cm or mm, which is the default:

\printlen[2][mm]{length register}

Will use 2 significant figures (which is the default), mm as unit of the relevant length register.


\foreach \x in {1,...,5} {%


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