# Table cell text overflow when using \multirow

I have made a table and in it, I have to use the multirow package for the headers. Works fine when there are two lines but it y-overflows when there are three. I tried increasing the space in each row with \setlength\extrarowheight but that just increased the cell and the overflow remained.

Here are a few pictures:

How do I solve this?

Here is the source for the table:

\documentclass[11pt,a4paper]{article}
\usepackage{multirow}
\begin{document}
\begin{table}[h!]
\centering
\caption{OVERFLOW}
\bgroup
\def\arraystretch{1.5}%
\begin{tabular}{|c|c|c|c|c|c|c|c|}
\hline
\multirow{2}{*}{
\begin{tabular}[c]{@{}c@{}}Extension\\
$x/\mathrm{cm}$\end{tabular}} &
\multicolumn{5}{c|}{
\begin{tabular}[c]{@{}c@{}}Distance travelled \\
$s_{i}/\mathrm{cm}$\end{tabular}} &
\multirow{2}{*}{
\begin{tabular}[c]{@{}c@{}}Avg. distance\\
$s/\mathrm{cm}$\end{tabular}} &
\multirow{2}{*}{
\begin{tabular}[c]{@{}c@{}}Uncertainty in\\
avg. distance\\ $\Delta s/\pm \mathrm{cm}$\end{tabular}} \\
\cline{2-6} &
Trial 1 & Trial 2 & Trial 3 & Trial 4 & Trial 5 &  &  \\
\hline
\end{tabular}
\egroup
\end{table}
\end{document}

• \multiline ?. – David Carlisle Mar 12 '17 at 20:04
• My bad. The multirow package – David Simon Tetruashvili Mar 12 '17 at 20:05
• also your example has two \documentclass commands and no document environment, it presumably did not produce the image shown. – David Carlisle Mar 12 '17 at 20:18

Edit:

With using makecell package for define multi-line multi-row cell, I obtain:

In table instead to increase \arraystretch I use gaped cells from makecell package:

\documentclass[11pt,a4paper]{article}
\usepackage{makecell, multirow}
\usepackage{siunitx}

\begin{document}
\begin{table}[h!]
\centering
\caption{OVERFLOW}
\setcellgapes{5pt}
\makegapedcells

\begin{tabular}{|c|c|c|c|c|c|c|c|}
\hline
\multirowcell{3}{Extension\\ \si{x/cm}}
&   \multicolumn{5}{c|}{\makecell{Distance travelled \\ \si{s_{i}/cm}}}
&   \multirowcell{3}{Avg. distance\\ \si{cm} }
&   \multirowcell{3}[1ex]{Uncertainty in\\
avg. distance\\
\si{\Delta s/\pm cm}}}  \\
\cline{2-6} &
Trial 1 & Trial 2 & Trial 3 & Trial 4 & Trial 5 &  &  \\
\hline
\end{tabular}
\end{table}
\end{document}