# How to format SI units?

I get 1.0 Nm. But how to get 1.0 N.m

\documentclass{article}
\usepackage{siunitx}
\begin{document}
\SI{1.0}{\newton\meter}\\
1.0~N$\cdot$m
\end{document}


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inter-unit-product is an available option and described in the documentation. To get correct spacing you should use ${}\cdot{}$. However I prefer a tighter spacing by $\cdot$.

\documentclass{article}
\usepackage{siunitx}
\parindent0pt
\begin{document}
\SI[inter-unit-product =$\cdot$]{1.0}{\newton\meter}\\
\SI[inter-unit-product =${}\cdot{}$]{1.0}{\newton\meter}\\
$1.0\,\mathrm{N}\cdot\mathrm{m}$
\end{document}


To set his behavior for the whole document you can specify the option via \sisetup

\sisetup{inter-unit-product =$\cdot$}

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I want this setting for whole document. –  sandu Jun 8 '12 at 8:53
@sandu: \sisetup{inter-unit-product =$\cdot$} –  Marco Daniel Jun 8 '12 at 8:54
@MarcoDaniel One should use \si[inter-unit-product = \ensuremath{{}\cdot{}}] to get the corrected spacing. –  Svend Tveskæg Apr 10 '13 at 12:57
@SvendTveskæg: I edited my answer. Thanks –  Marco Daniel Apr 10 '13 at 14:08