I am trying to create a big table without leading zeros using siunitx \num{}. Namely, I have a bunch of number formated like this:


and I want to remove the 0. part. So the output would be:


It should be the opposite of add-integer-zero option (something like remove-integer-zero). I have triyed lots of \sisetup configuration without luck. All question in tex exchange seems to be the opposite to what I want. Any idea of it is possible?

Thanks in advance.

  • Please show us an MWE showing your table. Do you need any other siunitx actions like aligning?
    – LaRiFaRi
    Apr 21, 2014 at 11:54
  • 6
    Removing the leading zero is not recommended.
    – egreg
    Apr 21, 2014 at 12:02
  • Welcome to TeX.SX! Apr 21, 2014 at 12:11
  • 1
    \sisetup{add-integer-zero=false} is the way to remove the leading zero, but don't do it.
    – egreg
    Apr 21, 2014 at 12:14
  • @egreg: add-integer-zero=false will not add an integer zero, .001 would be kept, but the option does not remove a zero from the input. AFAIK the requested feature is not supported by siunitx. Apr 21, 2014 at 12:19

1 Answer 1


I agree with the comments about this not being a good idea. But having said that, here's an approach, using the expl3 syntax that siunitx is built upon:


  \fp_compare:nTF { 0 < \fp_abs:n { #1 } < 1 }
      \__trimleadingzero:n {#1}
    { #1 }

\cs_new_protected:Npn \__trimleadingzero:n #1 {
  \seq_set_split:Nnn \l_ae_integer_decimal_parts_seq {.} {#1}
  \fp_compare:nF {#1>0}
    { - }
  .\seq_item:Nn \l_ae_integer_decimal_parts_seq {2}





enter image description here

  • Thanks for the code but I am afraid that does not work in my setup. Will I need a special version of expl3?
    – cruzki
    Apr 22, 2014 at 15:47
  • @cruzki The above code should work with the most recent version of LaTeX. You might want to update your system.
    – A.Ellett
    Apr 22, 2014 at 18:03
  • I have test both in Texlive 2013 (up to date gentoo linux unstable) and MikTex 2.9 (windows 7). I have tested both pdflatex and lualatex without luck (the leading 0 is still presented).
    – cruzki
    Apr 22, 2014 at 18:27
  • @cruzki If everything is up-to-date, then I'm not sure why it wouldn't work. Perhaps you should post a new question showing what you've tried so we can try to figure out why it's not working for you. I know that's a bit of a lame response, but without knowing more about what you're doing, it's hard to say. One thing you could try is add \listfiles in your preamble. That will inform you about versions of packages. When I do that it tells me that my version of expl3 is expl3.sty 2014/01/07 v4646 L3 Experimental code bundle wrapper
    – A.Ellett
    Apr 22, 2014 at 19:00
  • The problem is that the example you have provide is not working (and I do not have any experience with expl3 to debug the problem). It seems that my expl3 is almost a yera old compared with yours. I will try to update it. \listfiles expl3.sty 2013/03/14 v4469 L3 Experimental code bundle wrapper
    – cruzki
    Apr 22, 2014 at 19:10

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