I am using the scrbook documentclass with the option headings=small. I was asked to decrease the font size of \chapter and \section by one point. How can I do this?

1 Answer 1


If you use a scalable font (like lmodern) you can choose the fontsize with \fontsize and \selectfont. Below is a MWE. I tested how large the headings are with the \thefontsize macro. For me, chapter headings were 14.4pt big, so I changed it to 13.4pt and sections were 12pt so I changed it to 11pt. To change the font of special texts (like headings) KOMA-script has the command \addtokomafont and \setkomafont. With \usekomafont you can use the settings for the specified element.

EDIT: Added the determination of \baselineskip and adjusted the values in \fontsize to have the same relation to the new size.



\newcommand\thefontsize[1]{{#1 The font size is: \f@size pt\par Baselineskip: \the\baselineskip\par}}


  • Thank you for your answer. It works as expected. However I am a bit sceptical if it makes sense to set the same value for the font size and the baselineskip. Is there a possibility to determine the current value of the baselineskip as you did with the font size?
    – Jonas
    Jun 10, 2017 at 7:49
  • There is, see my edit.
    – Skillmon
    Jun 10, 2017 at 7:56

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