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I am getting overfull warning (Overfull \hbox (17.10379pt too wide) in alignment) when using longtable enviroment (See MWE below) The warnings are on \begin{longtable} and \end* lines. The pdf filellooks fine, but I would like to get rid of the warning message. Any suggestions on how to get rid of those warning by formatting the table?



        Title & Column 2 \\
        Title & Column 2 \\

    \lipsum[1] & \lipsum[2]\\
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Welcome. Load the package showframe and you will see the problem. The width of a column is .49\textwidth but you forgot the tabcolsep on the left and right of every column. – Marco Daniel Jan 28 '12 at 18:12
thank you. I did not konw about showframe. I fixed the column width and now it works fine. – mythealias Jan 28 '12 at 18:17
up vote 7 down vote accepted

You're not taking correctly into account the \tabcolsep, a space that is added in front and after all columns:


Or, with the calc package,

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