How to make document custom page dimensions?

Question

I have seen the options such as a4paper, a5paper, letterpaper, etc... to go in the square brackets after \documentclass, but what I want is 8.25 inches width by 10.75 inches height for one document and 6 inches width by 9 inches height for another one. How is this done?

Answer 1

Hope the code is self explanatory.

For first,

\documentclass{article}
\usepackage{blindtext}
\usepackage[paperheight=10.75in,paperwidth=8.25in,margin=1in,heightrounded,showframe]{geometry}
\begin{document}

\Blinddocument

\end{document}

and the second:

\documentclass{article}
\usepackage{blindtext}
\usepackage[paperheight=9in,paperwidth=6in,top=1in,bottom=1in,right=1in,left=1in,heightrounded,showframe]{geometry}
\begin{document}

\Blinddocument

\end{document}

Answer 2

Here is method without using a package:

\pdfpagewidth 8.25in
\pdfpageheight 10.75in

Answer 3

The geometry package, version 2020/01/02 v5.9, now has the command ''heightrounded'', which calculates for you an integer number of lines of text in ''\textheight''. So, it is suggested that that if you change ''\baselineskip'', that this be done before calling geometry:

\documentclass[11pt,openany]{book}  % XeLatex. pdf output.
  \author{Page Paperton}
  \date{2021 Sep}
  \title{A Custom Paper Size Template}
  \usepackage{comment,kantlipsum,verbatim}
  \usepackage{calc}
  \usepackage{fontspec}
  \setmainfont[Mapping=tex-text]{Minion Pro}
  \newlength{\OriginalBaselineSkip}
  \setlength{\OriginalBaselineSkip}{\baselineskip}
  \usepackage{setspace}
    \setstretch{1.05}    % Set font and line spacing before `heightrounded' below.
  \setlength{\paperwidth}{8.25in}
  \setlength{\paperheight}{10.75in}
  \usepackage[% showframe,
   % left=0.8in,   % 'left' means 'insidemargin'
    right=1.446in,  % 'right' means 'outsidemargin'
    hmarginratio={2:3},
    top=1.446in,
    vmarginratio={1:1},
    marginparwidth=0.6in,
    marginparsep=0.125in,
    heightrounded,  % To make the text block height an integer number of lines.
    driver=pdftex   % Final output is pdf.
             ]{geometry}

%  \usepackage{pdflscape}
% ------- \layout --------------------------------------------------- %
 \usepackage{layout}  % Use \layout to show page geometry             %
   % You can change \layout output metric here..                      % (Heiko Oberdiek)
   % in    = 1/72.27    = 0.013837000                                 %
   % picas = 12/72.27   = 0.166044002                                 %
   % bp    = 72/72.27   = 0.996264010                                 %
   % mm    = 25.4/72.27 = 0.351459804                                 %
   \makeatletter                                                      %
     \renewcommand*{\lay@value}[2]                                    %
     {                                                                %
       \strip@pt\dimexpr0.013837\dimexpr\csname#2\endcsname\relax\,in %
     }                                                                %
   \makeatother                                                       %
% ------------------------------------------------------------------- %
  \usepackage{booktabs}  % For nice looking tables \begin{tabular}{lcr...} ... \end{tabular}
  \usepackage{siunitx}   % Adds 'S' option for aligning table values at decimal point.
  %%%%%%%%%% A macro to display parameters in other units: %%%%%%%%%%%%%%%%%%%
       %%% Example useage: \convertto{in}{\pdfpagewidth}in %%% \the\pdfpagewidth also works.
  \makeatletter
    \def\convertto#1#2{\strip@pt\dimexpr #2*65536/\number\dimexpr 1#1 }
  \makeatother
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  \usepackage[hyphens]{url}
  \usepackage[hidelinks]{hyperref}

  \raggedbottom  % \flushbottom
\begin{document}
%  \pagenumbering{Alph}
  \maketitle
%  \pagenumbering{alph}
  \pagestyle{empty}
  \tableofcontents
  \thispagestyle{empty}
  \pagenumbering{arabic}
  \pagestyle{plain}
 \chapter{Benevolent Misanthropy}
  \section{Mishaps, Adventures, and Battling the Paper Sprites}
     \kant[1-7]
     \newlength{\insidemargin}
       \setlength{\insidemargin}{1.0in}
       \addtolength{\insidemargin}{\oddsidemargin}
     \newlength{\outsidemargin}
       \setlength{\outsidemargin}{\paperwidth}
       \addtolength{\outsidemargin}{-\insidemargin}
       \addtolength{\outsidemargin}{-\textwidth}
     \newlength{\topmrgn}
       \setlength{\topmrgn}{\topmargin}
       \addtolength{\topmrgn}{\headheight}
       \addtolength{\topmrgn}{1.0in}
       \addtolength{\topmrgn}{\headsep}
     \newlength{\bottommrgn}
       \setlength{\bottommrgn}{\paperheight}
       \addtolength{\bottommrgn}{-\topmrgn}
       \addtolength{\bottommrgn}{-\textheight}
     \newlength{\TextWidth}
       \setlength{\TextWidth}{\textwidth}
     \newlength{\TextHeight}
       \setlength{\TextHeight}{\textheight}
     \newlength{\LinesOfText}
     \newlength{\buffer}
       \setlength{\buffer}{\textheight}
       \addtolength{\buffer}{-\topskip}
       \setlength\LinesOfText{1pt*\ratio{\buffer}{\baselineskip}+1pt}

     \newpage
% \begin{landscape}
     \centering
     \begin{tabular}{clSSS} \toprule
       \multicolumn{1}{c}{Number} & Name & pt & in & mm \\ \midrule
        1 & \verb|\paperwidth|     & \convertto{pt}{\paperwidth}     & \convertto{in}{\paperwidth}     & {\convertto{mm}{\paperwidth}}      \\
        2 & \verb|\paperheight|    & \convertto{pt}{\paperheight}    & \convertto{in}{\paperheight}    & {\convertto{mm}{\paperheight}} \\
        3 & \verb|\textwidth|      & \convertto{pt}{\TextWidth}      & \convertto{in}{\TextWidth}      & {\convertto{mm}{\TextWidth}}   \\
        4 & \verb|\textheight|     & \convertto{pt}{\TextHeight}     & \convertto{in}{\TextHeight}     & {\convertto{mm}{\TextHeight}}  \\
        5 & \verb|\left|           & \convertto{pt}{\insidemargin}   & \convertto{in}{\insidemargin}   & {\convertto{mm}{\insidemargin}}    \\
        6 & \verb|\right|          & \convertto{pt}{\outsidemargin}  & \convertto{in}{\outsidemargin}  & {\convertto{mm}{\outsidemargin}}   \\
        7 & \verb|\top|            & \convertto{pt}{\topmrgn}        & \convertto{in}{\topmrgn}        & {\convertto{mm}{\topmrgn}}       \\
        8 & \verb|\bottom|         & \convertto{pt}{\bottommrgn}     & \convertto{in}{\bottommrgn}     & {\convertto{mm}{\bottommrgn}}    \\
        9 & \verb|\marginparwidth| & \convertto{pt}{\marginparwidth} & \convertto{in}{\marginparwidth} & {\convertto{mm}{\marginparwidth}}  \\
       10 & \verb|\marginparsep|   & \convertto{pt}{\marginparsep}   & \convertto{in}{\marginparsep}   & {\convertto{mm}{\marginparsep}}    \\
       11 & \verb|\headheight|     & \convertto{pt}{\headheight}     & \convertto{in}{\headheight}     & {\convertto{mm}{\headheight}}      \\
       12 & \verb|\headsep|        & \convertto{pt}{\headsep}        & \convertto{in}{\headsep}        & {\convertto{mm}{\headsep}}         \\
       13 & \verb|\footskip|       & \convertto{pt}{\footskip}       & \convertto{in}{\footskip}       & {\convertto{mm}{\footskip}}        \\
       \bottomrule
     \end{tabular}

     \flushleft
     \verb|\baslineskip =| \the\OriginalBaselineSkip\ (Original)\par
     \verb|\baslineskip =| \the\baselineskip\ (Current, after \verb|\setstretch|)\par
     \verb|\topskip =| \the\topskip\par
     The number of lines of text = \par
     \verb|(\textheight-\topskip)/\baselineskip + 1 = | \convertto{pt}{\LinesOfText}
% \end{landscape}

     \layout

\end{document}