Convert Excel to Markdown
Drop in an Excel workbook and get clean Markdown tables back in a few seconds. Each sheet becomes a table you can paste into ChatGPT, Claude, or whatever feeds your RAG pipeline. It runs in your browser, so the file stays on your device.
How to convert Excel to Markdown
- 1
Add your spreadsheet
Drag an .xlsx or .xls file onto the box above, or click to pick one from your computer.
- 2
Let it convert
The tool reads each sheet in your browser and lays the cells out as Markdown tables. Most files finish in a few seconds.
- 3
Copy or download
Copy the Markdown with one click, or save a .md file, then paste it into ChatGPT, Claude, or any AI tool.
Why convert a spreadsheet before sending it to AI
A spreadsheet pasted as a screenshot or an HTML table buries each cell in markup an AI has to read and pay for. A Markdown table holds the same rows and columns in plain pipes and dashes, which a model parses cleanly and reads as real structure. The same sheet usually loses 30 to 40 percent of its token count, so you pay less and the data lands in a shape the model understands.
Formulas come through as values
You get the value each cell shows, not the formula behind it, which is what an AI needs to reason about the numbers. Charts, images and cell colours are left out, since the output is text. Very wide sheets make very wide tables, so a focused range usually reads better than a whole workbook at once.
Excel to Markdown questions
Is it free?
Yes. No account, no limits, no cost. Convert as many spreadsheets as you want.
Do my spreadsheets get uploaded?
No. The conversion runs in your browser, so the file stays on your device and its contents are never sent to a server.
Does it read .xls as well as .xlsx?
Yes. Both the modern .xlsx format and the older .xls workbooks convert here, each sheet turned into its own Markdown table.
What happens to multiple sheets?
Each sheet in the workbook becomes its own Markdown table in the output, one after another, so nothing gets merged or lost.
Do my formulas convert?
You get the result each cell displays, not the formula text. That is usually what you want for an AI, which reasons about the numbers rather than the spreadsheet logic.
How big a file can I convert?
Up to 15 MB. Very large workbooks can run your browser out of memory, so the tool stops before that happens. A single sheet or a trimmed range converts fastest.