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Excel (XLSX) to Markdown

Drop a spreadsheet and get clean Markdown tables — one per sheet, rows and columns intact. Works with .xlsx, .xls, .ods and .xlsb, all in your browser.

Runs in your browser. Your input is not uploaded to PayloadIQ.

Every sheet, as a Markdown table

The grid is where a spreadsheet's meaning lives — which value sits in which row and column. This converter reads the workbook with SheetJS and rebuilds each sheet as a GitHub-flavoured Markdown table, padding ragged rows and escaping stray pipe characters so nothing breaks. A workbook with five tabs comes out as five clean tables.

Markdown tables are how you hand data to a model

You can't paste an Excel file into a prompt, and pasting raw cells usually scrambles the alignment. A Markdown table keeps the structure explicit, so a model reading it knows exactly which header each value belongs to. That makes it the right shape for prompts, retrieval indexes, and anywhere you want an AI to answer questions about your data.

Local and free

The whole thing runs in your browser — no upload, no account, no catch. Copy the Markdown or download a .md file.

FAQ

Is my spreadsheet uploaded?
No. The workbook is read in your browser with SheetJS and converted on the spot. Your numbers never leave the device — safe for financials, customer lists, and anything sensitive.
What happens to multiple sheets?
Each sheet becomes its own Markdown table under a heading with the sheet's name, in the original order, so a multi-tab workbook converts in one pass.
Why turn a spreadsheet into Markdown for AI?
A model can't open an .xlsx, and a screenshot loses the data. A Markdown table keeps the rows and columns as plain text the model can actually reason over — totals, lookups, comparisons — without any binary wrapper.
Which formats are supported?
Modern Excel (.xlsx), legacy Excel (.xls), OpenDocument spreadsheets (.ods), and binary .xlsb. Formulas are converted to their last calculated value; formatting and charts are not included.

Related utilities

CSV to Markdown TableJSON to CSVPDF to MarkdownMarkdown Preview
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