A Latex command that converts any non formatted unit, e.g. Kg.m2.s-1 into a beautifully formatted Latex $\textrm{Kg}\cdot\textrm{m}^2\cdot\textrm{s}^{-2}}$.

Units Latexizer

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% Units Latexizer by Clément Grennerat %
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% Actions:
%   "deg" is replaced by °C
%   Letters [A-Za-z] are put into textrm{}
%   Numbers and minus are superscripted
%   Dots are replaced by \cdot
\ExplSyntaxOn
\NewDocumentCommand{\formatUnit}{m}
{
  \tl_set:Nn \l_tmpa_tl { #1 }
  \regex_replace_all:nnN { (deg) } { ^\c{circ} C } \l_tmpa_tl
  \regex_replace_all:nnN { ([A-Za-z]+) } { \c{textrm}\cB\{ \1 \cE\} } \l_tmpa_tl
  \regex_replace_all:nnN { ([0-9-]+) } { ^{\1} } \l_tmpa_tl
  \regex_replace_all:nnN { (\.) } { \c{cdot} } \l_tmpa_tl
  \tl_use:N \l_tmpa_tl
}
\ExplSyntaxOff

% Command for auto-completion and text mode support
\renewcommand{\u}[1]{
  \ifmmode \ \formatUnit{#1} \else $\formatUnit{#1}$ \fi
}