[Tex/LaTex] Difference between LaTeX and Word in setting font size


I am working in LyX (compiled with MiKTeX) on Windows. I am a newbie so
I am wondering how can I manually set the font (like entering in a number
as you would in Microsoft Word).

Best Answer

Font selection in TeX is a little different from that of MS Word. In LyX, the following choices are available:

  • Changing the default font size of the document: Under Document>Settings...>Fonts, you can choose the Base Size as being Default, 10pt, 11pt or 12pt (Default is 10pt in most cases). This is similar to the traditional \documentclass[<fontsize>]{<doc-class>} selection in LaTeX.

    LyX base font size

  • For changing font size "on the fly" within the text: Select the text, click the Text Style button LyX text style (or Edit>Text Style>Customized...) and choose one of the Size options (Small, Normal, Large, etc.). Click OK or Apply to activate the font selection.

    LyX font size selection

    Under the Base Size of 10pt / 11pt / 12pt (respectively), the following font sizes (or Text Styles) hold:

    • Tiny (LaTeX's \tiny): 5pt / 6pt / 6pt
    • Smallest (LaTeX's \scriptsize): 7pt / 8pt / 8pt
    • Smaller (LaTeX's \footnotesize): 8pt / 9pt / 10pt
    • Small (LaTeX's \small): 9pt / 10pt / 10.95pt
    • Normal (LaTeX's \normalsize): 10pt / 10.95pt / 12pt
    • Large (LaTeX's \large): 12pt / 12pt / 14.4pt
    • Larger (LaTeX's \Large): 14.4pt / 14.4pt / 17.28pt
    • Largest (LaTeX's \LARGE): 17.28pt, 17.28pt / 20.74pt
    • Huge (LaTeX's \huge): 20.74pt / 20.74pt / 24.88pt
    • Huger (LaTeX's \Huge): 24.88pt / 24.88pt / 24.88pt
    • Increase: Step one font size up
    • Decrease: Step one font size down
    • Reset: Same as Normal

For specifying and using other font sizes, you will have to include packages that support this or add LaTeX code within your document where you want these changes to take effect. For example, the best way to accomplish this is to use Latin Modern via the lmodern package. Insert this in your LaTeX Preamble using

enter image description here

and then insert the LaTeX code (via Ctrl+L or LyX Insert TeX code) \fontsize{40pt}{48pt}\selectfont where you want it to take effect. \fontsize{<size>}{<baselineskip>} sets the font size to <size> and the skip from baseline-to-baseline as <baseline>. it is usually accepted to have <baseline>~1.2x<size>.Note that this command is considered a switch, making all subsequent text that size. If you want to localize the change, you need to use grouping via braces {...}. For example, the LyX input

LyX input


LyX output

A similar approach can be followed using the anyfontsize package.