Turn an .xlsx workbook into CSV in your browser: pick the sheet, values preserved, RFC 4180 quoting. Nothing is uploaded.
Choose a workbook; its sheets appear here.
Formulas export as cached values; dates become ISO 8601. Nothing is uploaded.
An RFC 4180 CSV of the selected sheet: one line per row, quoted cells where commas or quotes appear, dates as ISO 8601.
One sheet per export — the format carries a single table. Other sheets need one run each.
Your file is never sent to a server. It is read and processed by your own browser, and the results are not stored.
Every cell is emitted per RFC 4180: fields containing commas or quotes are quoted, quotes are doubled, embedded newlines survive. Values that look like dates become ISO strings; everything else is a number or literal string, untouched.
If Excel shows a formatted date like “10 Nov 2026”, that is a display string — the underlying value this tool exports is whatever the cell actually holds, usually an ISO timestamp.
Sheet names, styles, merges, charts and formulas. A CSV is the table, nothing else — which is exactly what every downstream tool expects.
No. Excel to CSV Converter runs in your browser, and the file is read there rather than sent to a server for processing. Our host still sees ordinary page-request metadata, which is described on the privacy page.
Yes, Excel to CSV Converter is free, with no paid tier, no account, and no watermark added to your output. The limits are technical rather than commercial: file size, page count and supported formats are listed on this page.
Excel to CSV Converter supports .xlsx, .xls files up to 25MB directly in your browser.
Yes — every sheet in the workbook is listed. Exports convert one sheet at a time; CSV has exactly one table anyway.
The values Excel cached in the file are exported — exactly what you see. Formulas are not evaluated.
Dates are exported ISO 8601 (YYYY-MM-DD) so they survive any downstream import without locale guessing.
No. Parsing and export happen in this tab; nothing leaves your device.