I would like to set page sizes of my project but when I do it the result isn't correct. I read some articles on Google but I didn't understand anything.

This is a head of my project

\usepackage[a6paper,top=10mm,bottom=15mm,left=10mm,right=10mm]{geometry} %- my set

But when I compile my project pages are A6 but margins aren't correct. But why?

On the picture there is - on the left what I want - on the right what I get.

What I want and what I get.

It looks correctly but when I try to change margins it hasn't any effect. Margins are set but they haven't my setting. I need a small left margin. I want to use all area of a paper.

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    Welcome to TeX.SX! Please make your code compilable (if possible), or at least complete it with \documentclass{...}, the required \usepackage's, \begin{document}, and \end{document}. That may seem tedious to you, but think of the extra work it represents for TeX.SX users willing to give you a hand. Help them help you: remove that one hurdle between you and a solution to your problem. Jul 15, 2016 at 19:58
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    I'm sorry, but completing ans testing you code, I get horizontal margins of 9.8mm (measured, with option showframe). The difference corresponds more or less to the thickness of the frame. So there must be something else.
    – Bernard
    Jul 15, 2016 at 21:21
  • 1
    A6 is a relatively small paper size, so you need to add showframe to the geometry options, and print the page on a6 paper. Jul 15, 2016 at 22:17

1 Answer 1


The answer is:

\usepackage[top=10mm, bottom=10mm, left=0mm, right=10mm, showframe,
            foot=5mm, marginparsep=0mm]{geometry}



\strip@pt\dimexpr0.3514598\dimexpr #1\relax\relax mm%
\strip@pt\dimexpr0.013837\dimexpr #1\relax\relax in%



\the\paperheight \par
\the\paperwidth  \par
\the\hsize       \par % or \textwidth
\the\vsize       \par % or \textheight

\usemm{\the\paperheight} \par
\usemm{\the\paperwidth}  \par
\usemm{\the\hsize}       \par
\usemm{\the\vsize}       \par

\usein{\the\paperheight} \par
\usein{\the\paperwidth}  \par
\usein{\the\hsize}       \par
\usein{\the\vsize}       \par


Everything looks very good and it is correct.

  • With bottom=15mm it fits your question. Your code is more a less a copy of @jon s answer . I think you should mention that.
    – Bobyandbob
    Jun 25, 2017 at 20:49

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