siunitx: enclose all units in brackets

Question

when I use the command

\SI{1}{\kilo\gram}

I'd like it to output

1 [kg]

Is there a setting so that SIUnitx automatically does this for all units in a document?

Answer 1

As far as I know, there is no such option. You could redefine the \SI command. Here is a very basic approach which could be improved from the technical point of view in many ways.

\documentclass{article}

\usepackage{siunitx}

\renewcommand{\SI}[3][]{\mbox{$\num[#1]{#2}\,\left[\si{#3}\right]$}}

\begin{document}

\SI{1}{\kilo\gram}

\end{document}

This gives:

Edit: Please note, however, the valid comment by Massimo Ortolano below the question.