Convert XLSX to CSV
Converting from: XLSX
Converting to: CSV
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About XLSX
XLSX is Microsoft Excel's spreadsheet format, storing rows, columns, formulas, and formatting in a compressed XML archive.
The standard choice for budgets, data tables, and anything requiring formulas or multiple sheets.
A single XLSX sheet can hold over 1 million rows and more than 16,000 columns.
💡 Excel's grid limit was only 65,536 rows until 2007 — the modern 1,048,576-row limit is exactly 2^20.
About CSV
CSV (Comma-Separated Values) stores tabular data as plain text, with each line representing a row and commas separating columns.
The universal format for importing and exporting data between databases, spreadsheets, and analytics tools.
CSV has no official standard until RFC 4180 was published in 2005, decades after the format was already widely used.
💡 Despite the name, CSV files can technically use semicolons, tabs, or other delimiters instead of commas.
Frequently asked questions
How do I convert XLSX to CSV?
Upload your XLSX file above, and Other Streets converts it to CSV instantly in your browser — no software to install and no waiting.
Is converting XLSX to CSV free?
Yes. Every conversion on Other Streets, including XLSX to CSV, is completely free with no limits or hidden fees.
Can I convert multiple XLSX files to CSV at once?
Yes. You can upload as many XLSX files as you want and convert them all to CSV in the same batch.