or click to browse
Drag and drop any .xlsx or .xls file onto the page, or click to browse. Your file stays in your browser — nothing is uploaded.
The file is converted instantly. If the workbook has multiple sheets, use the sheet selector dropdown to pick the one you need. Preview the data to verify it looks correct.
Click the download button to save your converted CSV file. All cell values are preserved as plain text.
Your files never leave your browser. All conversion happens locally using WebAssembly — no uploads, no servers, no tracking.
Powered by a browser-based WebAssembly engine. Convert files with millions of rows in seconds, right in your browser.
Convert files up to several hundred megabytes. No artificial row limits or file size restrictions.
No sign-up, no credit card, no hidden limits. Use this converter as much as you need, completely free.
Excel files are everywhere, but CSV is the universal interchange format. This converter makes the transition seamless. Developers use it to convert spreadsheets into a format their scripts can parse. Data analysts use it to strip out Excel formatting and get clean, comma-separated data. Teams use it to prepare data for import into databases, CRMs, or analytics tools that only accept CSV. Since everything runs locally, it's ideal for HR data, financial reports, or any sensitive spreadsheet that shouldn't be uploaded to third-party services.
Yes, completely free with no limits. No sign-up or credit card required.
Both .xlsx (modern Excel) and .xls (legacy Excel) formats are supported.
Your data never leaves your browser. All conversion happens locally using WebAssembly. We never see, store, or transmit your files.
If your workbook has multiple sheets, a sheet selector dropdown appears in the toolbar. You can switch between sheets instantly — the data preview and download update automatically. The first non-empty sheet is selected automatically.
The converter exports the calculated values, not the formulas themselves. What you see in Excel is what you get in CSV.
Dates and numbers are converted to their text representation. The formatting may differ from what you see in Excel, but the underlying values are preserved.
Yes. The converter handles Excel files up to several hundred megabytes with hundreds of thousands of rows.
No. This tool runs entirely in your browser. No Office, LibreOffice, or any other software required.
Convert Excel files (.xlsx, .xls) to Apache Parquet instantly in your browser. No upload, no Python, no install. Smaller files, typed columns, Snappy compression.
Convert Parquet files to CSV instantly in your browser. No upload, no Python, no install. Privacy-first — your data never leaves your device.
Convert CSV files to Apache Parquet instantly in your browser. No upload, no Python, no install. Smaller files, faster queries, type-safe columns.
View Excel files (.xlsx, .xls) instantly in your browser. Sort, filter, search across sheets. No upload required — your data never leaves your device.