Step 1 / source
Choose the source
Drop one file here
Choose the one markdown table you want to turn into utf-8 csv table.
Checking publication status...LOCAL TABLE CONVERTER / MARKDOWN TABLE TO CSV
Markdown Table to CSV
Extract exactly one rectangular GitHub-style Markdown table into formula-protected UTF-8 CSV.
Processed in this browserOne UTF-8 .md or .markdown file up to 5 MB containing one header row, one valid delimiter row, and up to 50,000 data rows, 200 columns, and 1,000,000 cells.
MD - one table
No file upload
This operation runs with browser APIs. Nirmion receives catalogue requests, not the selected source bytes.
Original stays unchanged
The converter creates a separately named output. It never writes back into the source file.
Bounded work
One UTF-8 .md or .markdown file up to 5 MB containing one header row, one valid delimiter row, and up to 50,000 data rows, 200 columns, and 1,000,000 cells.
Plain-language method
How Markdown Table to CSV works
Nirmion requires a header, --- delimiter row, and rectangular data rows, recognizes escaped pipes and backslashes, converts br markers to line breaks, decodes HTML entities, quotes CSV-sensitive text, and optionally protects formula-leading cells.
- 01Choose a valid source
Provide only one Markdown table. Prose, fenced blocks, missing delimiter rows, merged cells, and inconsistent row widths are rejected.
- 02Review the conversion choices
Formula protection is recommended when the CSV will be opened in spreadsheet software.
- 03Inspect the separate result
The UTF-8 result ends in _nirmion_tools.csv and contains the Markdown header as its first row.
Useful when
Practical jobs this tool handles
- Move a documentation table into a spreadsheet.
- Prepare a README table for data review.
- Create a CSV import from a maintained Markdown table.
Before converting
Check the source and destination rules
- Confirm escaped pipes are correct.
- Check every row has the same cell count.
- Keep formula protection enabled for untrusted content.
Know the boundary
Know what the destination format cannot keep
Markdown emphasis, links, code markers, and other inline syntax remain literal cell text. The converter does not render Markdown before extraction.
Quick answers
Questions before you convert
The conversion contract is deliberately explicit.
Is the alignment row exported?
No. It describes Markdown layout and is not data.
Are links resolved?
No. Markdown source text remains text.
Why might an apostrophe be added?
Formula protection neutralizes spreadsheet formula triggers.