When I put X in column specifier, how can I define column formatting? How can I get center alignment? Currently I am putting \centering, but that is not a proper solution.

This is my code:

\usepackage[margin=1in]{geometry}% http://ctan.org/pkg/geometry


\caption{Case studies}
\centering Nature of unreliability & \centering Sender SST & \centering Receiver SST & \centering Implementation SST &  Retransmission Bound \\


Noisy (Single fixed error message) & DSST & DSST & DSST & Unbounded \\

  • 2
    \centering is the proper solution. But if you use it in the last column you should use \tabularnewline to end the row of the tabular. Feb 7, 2013 at 12:27
  • 2
    If you want it to apply to the whole column you can use >{\centering \arraybackslash}X as it suggests in the tabularx manual. Feb 7, 2013 at 12:41
  • Please, clarify if you need to center align only one row or all of them.
    – egreg
    Feb 7, 2013 at 13:41
  • @DavidCarlisle Please check my answer -- for whatever reason, >{\centering \arraybackslash}X does not suffice.
    – lockstep
    Feb 7, 2013 at 14:20

1 Answer 1


My answer to How to create fixed width table columns with text raggedright/centered/raggedleft? can also be applied in slightly modified form to X columns. (Note that omitting \let\newline\\ will result in text that is not properly centered.)





\begin{tabularx}{\linewidth}{| c | c | Z |}
Abc & Bcd & Cde \\
Abc & Bcd & A long cell with text that is centered \newline
    and allows manual line breaks \\


enter image description here

  • 1
    yes \centering only redefines \` not \newline` so if you need manual breaks you can do as here, or don't use \arraybackslash and use \` for centering break and \tabularnewline` for end of table row, or perhaps simplest you can use a blank line to force a new centred parapgraph Feb 7, 2013 at 16:45
  • 3
    My god what a rubbish package that requires the definition of a new custom class just to center text horizontally.
    – SomJura
    Aug 2, 2021 at 20:04

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