LaTeX Table to CSV Converter
Journal submissions, thesis appendices and lab reports store their numbers inside LaTeX tabular environments. Pulling those figures into a spreadsheet by hand means deleting every ampersand, double backslash and rule command, then fixing escaped percent and dollar signs. This LaTeX table to CSV converter reads the first tabular block in your text and returns clean rows.
Paste the LaTeX source or upload a .tex file. The parsing runs in your browser, so unpublished results are not sent anywhere.
Key features
- Converts the first tabular or tabularx block, including \multicolumn spanning cells.
- Drops rule commands and comments, and unescapes the common LaTeX special characters.
- Repeated header names get a numbered suffix, such as A (2), so no column is lost.
- Works on a pasted fragment or an uploaded .tex file.
About the LaTeX tabular to CSV format
A tabular environment starts with \begin{tabular}{lrr}. The braces hold the column alignment spec, which is skipped because CSV has no alignment. Each row ends at a double backslash, and cells are separated by ampersands that sit outside any braces.
Rule commands such as \toprule, \midrule, \bottomrule, \hline and \cline only draw lines, so they are removed. Escaped characters \& \% \$ \# \_ \{ and \} come out as the plain symbol. Formatting commands like \textbf{Region} keep their text and lose the command. The first row with content becomes the CSV header.
How it works
The converter finds the first \begin{tabular} and skips its optional alignment and column spec. It walks the body once, splitting cells on ampersands and rows on double backslashes, but only when they sit outside braces. Each cell is cleaned in a fixed order: formatting commands are unwrapped, grouping braces are removed, escaped symbols are restored, and whitespace is collapsed. A \multicolumn cell is written once and followed by blank cells for the columns it spans.
Common use cases
- Checking the figures in a results table from a manuscript draft against the numbers in a shared spreadsheet.
- Turning an appendix table into CSV so a plotting script can read it without a LaTeX parser.
- Recovering the data behind a table when a collaborator only sent the .tex source and no spreadsheet.
How to use this tool
- Copy the tabular block from your .tex file, or upload the whole file.
- Click convert and check that the header row matches the column titles in your document.
- Confirm the row count against the table in the PDF. Blank spacing rows are expected to be missing.
- Download the table rows as CSV, or open them in the CSV editor and replace any formula text, such as $x^2$, with values before you calculate.
Example
Input LaTeX (one table with a spanning row)
\begin{table}
\caption{Quarterly sales}
\begin{tabular}{lrr}
\toprule
\textbf{Region} & \textbf{Units} & Revenue (\$) \\
\midrule
North & 1,240 & 18.5\% \\
South & 980 & 14.2\% \\
\multicolumn{3}{l}{Figures are preliminary.} \\
\bottomrule
\end{tabular}
\end{table}Output CSV
Region,Units,Revenue ($)
North,"1,240",18.5%
South,980,14.2%
Figures are preliminary.,,Tips for best results
- You can paste the whole table float with its caption. Everything outside the tabular block is ignored.
- Keep \% and \$ in the source. The converter unescapes them, so 18.5\% becomes 18.5% in the CSV.
- Use the first row for column names only. Put a short unit in the header, such as Units (count), so the column stays readable after export.
Common errors and how to fix them
- No tabular environment found.
- The text has no \begin{tabular} line. If you pasted only the caption or a figure float, include the tabular block inside it.
- The tabular environment is not closed.
- The matching \end{tabular} line is missing. Check the end of your paste, because truncated copies from PDFs and editors often lose the final line.
- Expected a { group after \begin{tabular} column specification.
- The column spec after \begin{tabular} is malformed, usually a missing closing brace. Correct the spec so it reads like {lrr} or {p{3cm}r}.
Best practices
- Convert the table as it appears in the final draft, not an older copy, so the numbers match the PDF you reviewed.
- Keep column headers short and free of inline math before converting, since headers become CSV column names.
- Review the first data row after conversion. A stray \rowcolor or \cellcolor command will show up there as text.
What the output keeps and what it drops
The converter keeps the visible text of each cell and removes the markup that only controls layout. Things that carry meaning but are not plain text, such as citations, labels and math, are copied as written. A citation like \cite{smith2020} stays as it appears in the source, so you can search for it in the document. Math is not converted to a number.
Column alignment is the most common thing people expect to be preserved. It is not: CSV has no alignment, so an r column and an l column produce the same kind of plain value. If a column of numbers must be right-aligned in the final spreadsheet, set that in the spreadsheet application after import.
Frequently asked questions
Does it handle tabularx tables?
Yes. A tabularx block takes an extra width argument, and the converter skips it. The X column types are read like any other column.
Can it read longtable or array environments?
Not at the moment. Only tabular and tabularx blocks are recognized. A longtable uses the same column spec and row syntax, so changing its \begin and \end lines to tabular in the pasted text converts it, as long as the page-break commands such as \endhead are removed first.
Why does a cell show \cite{key} in the CSV?
Commands that are not formatting are left in place, so citations, references and custom macros stay visible. Delete them with a find and replace in the CSV editor if you do not want them.
For more background on data formats and conversion workflows, read our format guides.