Turn JSON data into a ready-to-paste LaTeX table in seconds
Paste your JSON array above and get a clean LaTeX table — complete with \begin{tabular}, column headers, and properly escaped cells — with no manual formatting needed. Perfect for researchers, students, and engineers who want to drop data directly into a LaTeX document or Overleaf project.
How to convert JSON to a LaTeX table
- Paste your JSON into the input box above. It should be an array of objects, where each object is one row and the keys become column headers.
- Choose LaTeX Table as the output format (it may already be selected).
- Click Convert. Your LaTeX table code appears instantly in the output panel.
- Copy or download the result and paste it straight into your
.texfile or Overleaf editor.
Worked example: JSON input → LaTeX table output
Say you have this JSON array of experiment results:
[
{ "Sample": "A", "Temperature": 22.5, "Yield": 91 },
{ "Sample": "B", "Temperature": 37.0, "Yield": 85 },
{ "Sample": "C", "Temperature": 55.3, "Yield": 78 }
]The converter produces this LaTeX code:
\begin{table}[h]
\centering
\begin{tabular}{|l|l|l|}
\hline
Sample & Temperature & Yield \\
\hline
A & 22.5 & 91 \\
B & 37.0 & 85 \\
C & 55.3 & 78 \\
\hline
\end{tabular}
\caption{Your caption here}
\label{tab:your-label}
\end{table}Drop that block into any LaTeX document and it compiles straight away. Edit the \caption and \label to suit your paper.
How to do this in Python or JavaScript
If you need to generate LaTeX tables from JSON in a script, here are minimal working examples:
Python
import json
data = [
{"Sample": "A", "Temperature": 22.5, "Yield": 91},
{"Sample": "B", "Temperature": 37.0, "Yield": 85},
]
keys = list(data[0].keys())
lines = []
lines.append(r"\begin{tabular}{" + "|l" * len(keys) + "|}")
lines.append(r"\hline")
lines.append(" & ".join(keys) + r" \\")
lines.append(r"\hline")
for row in data:
lines.append(" & ".join(str(row[k]) for k in keys) + r" \\")
lines.append(r"\hline")
lines.append(r"\end{tabular}")
print("\n".join(lines))JavaScript (Node.js or browser)
const data = [
{ Sample: "A", Temperature: 22.5, Yield: 91 },
{ Sample: "B", Temperature: 37.0, Yield: 85 },
];
const keys = Object.keys(data[0]);
const cols = keys.map(() => "l").join("|");
const header = keys.join(" & ") + " \\\\";
const rows = data.map(r => keys.map(k => r[k]).join(" & ") + " \\\\");
const table = [
`\\begin{tabular}{|${cols}|}`,
"\\hline",
header,
"\\hline",
...rows,
"\\hline",
"\\end{tabular}"
].join("\n");
console.log(table);The online tool above is faster for one-off conversions. Use a script when you need to automate the process for many files.
How it works
The converter parses your JSON array and pulls the keys from the first object to build the column headers. Each subsequent object becomes a table row. Special characters that break LaTeX — like &, %, _, #, and \ — are automatically escaped so the output compiles without errors. Numbers are detected and left unquoted; strings pass through as-is after escaping.
The output follows standard LaTeX table syntax as defined in the LaTeX2e documentation. You can paste it directly into the document environment, wrap it in a \begin{table} float (already included by default), and it works with any standard LaTeX distribution or Overleaf.
When to use this tool — and when not to
| Use it when… | Consider another option when… |
|---|---|
| You have a flat JSON array of objects (rows × columns) | Your JSON is deeply nested — flatten it first |
| You need a table for a research paper, thesis, or technical report | You need booktabs or custom column widths — tweak the output after converting |
You want to skip manual & and \\ formatting |
You have thousands of rows — a script or pgfplotstable may be more practical |
| You're copying data from an API or spreadsheet export | You only have a CSV — use our JSON Beautifier to clean it first, or convert CSV directly |
Tidy your JSON before converting
If your JSON looks messy or throws a parse error, run it through our JSON Beautifier – Format, Validate & Minify JSON Online first. It will format and highlight any syntax mistakes so you can fix them before converting.
Got minified JSON on one line? The JSON Pretty Print tool will expand it into readable form. And if you want to validate the structure before anything else, the JSON Validator – Check & Fix JSON Errors Online spots problems in seconds.
JSON input:
[
{ "City": "Paris", "Pop_M": 2.16 },
{ "City": "Berlin", "Pop_M": 3.65 },
{ "City": "Rome", "Pop_M": 2.87 }
]\begin{tabular}{|l|l|}
\hline
City & Pop\_M \\
\hline
Paris & 2.16 \\
Berlin & 3.65 \\
Rome & 2.87 \\
\hline
\end{tabular}Ready to skip the manual formatting? Paste your JSON into the converter above and get a compile-ready LaTeX table in one click.