CSV to LaTeX Table

Why typing a LaTeX table by hand is the worst

You’ve got a spreadsheet. Forty rows of results, four columns, and a deadline. Now you need it inside your paper as a tabular. So you start typing & between every cell, \\ at the end of every line, and somewhere around row twelve you fat-finger an ampersand and the whole thing stops compiling. Sound familiar?

Paste the CSV here instead. The table comes out the other side already formatted, already escaped, ready to drop into your .tex file.

What you actually get

The output is a complete tabular environment, not a half-finished fragment you have to wrap yourself. Flip on “Wrap in table float” and it nests inside a table block with \centering, a \caption, and a \label, so it floats properly and you can \ref it later.

A few things happen automatically:

• Booktabs by default. You get \toprule, \midrule, and \bottomrule instead of those heavy vertical lines that journals hate. Prefer the classic look? One toggle switches everything to \hline borders with vertical rules.
• Headers in bold. The first row gets wrapped in \textbf{}. Turn it off if your column titles are already styled.
• Numbers go right. In auto mode, any column where every body cell looks like a number, including $18600, 14%, or 1,240, gets right-aligned. Text columns stay left. You can also force every column to l, c, or r.

Special characters won’t break your build

This is the part that bites everyone. LaTeX treats ten characters as magic: &, %, $, #, _, {, }, ~, ^, and the backslash itself. A stray underscore in a product code like SKU_204 will throw a compile error or silently turn into a subscript.

Every cell gets escaped before it lands in the output. So 100% becomes 100\%, R&D becomes R\&D, and file_name becomes file\_name. The tilde and caret get the \textasciitilde{} and \textasciicircum{} treatment so they render as actual characters, not accent commands.

How to use it

Drop your CSV in the left box. The LaTeX updates as you type. Pick your delimiter if it’s not a comma, semicolon and tab are both there for European exports and TSV files. Quoted fields with commas inside them, like "Smith, John", parse correctly, and doubled quotes ("") collapse to a single one the way the CSV spec says they should.

When it looks right, hit Copy or grab the .tex file with Download. If you used booktabs, there’s a one-line comment at the top reminding you to add \usepackage{booktabs} to your preamble. Miss that and you’ll get an “undefined control sequence” error, so it’s there on purpose.

Everything runs in the browser. Your data doesn’t get uploaded anywhere, which is handy when the numbers are from an unpublished experiment.

FAQ

Do I need the booktabs package?

Only if you keep booktabs mode on. The output reminds you to add \usepackage{booktabs}. Switch to plain \hline mode and you need nothing extra, it’s all base LaTeX.

How does auto alignment decide what’s a number?

It checks every cell below the header in a column. If they all parse as numbers, including currency symbols, thousands separators, and trailing percent signs, the column goes right-aligned. One piece of text anywhere and it falls back to left.

What if my CSV has commas inside a field?

Wrap that field in double quotes, like "Paris, France", and the parser keeps it as one cell. That’s standard CSV behavior and it’s fully supported here.

Will it handle ragged rows with missing cells?

Yep. Short rows get padded with empty cells so every line in the table has the same column count and LaTeX doesn’t complain about a mismatched &.

Can I get just the tabular without the float?

That’s the default. Leave “Wrap in table float” off and you get a bare tabular you can paste anywhere, inside a figure, a minipage, or your own custom wrapper.