XLSX to CSV Converter
Export an Excel .xlsx workbook sheet to CSV in your browser. Exact-format URL for spreadsheet pipelines; Excel-branded alias: /converters/excel-to-csv.
Comma-separated values with a header row — opens in Excel, Sheets and Numbers.
Choose a file or drag and drop
Drop your Excel file here or
Choose file · Drag & drop · Public file link
- Processed on your device
- No conversion file stored on our servers
- Maximum file size: 100 MB
Conversion runs in your browser. Files are not uploaded to Format Convertly servers.
Processed on your device
No conversion file stored on our servers
Conversion Settings
Customize the output to match your needs.
Convert Quality
92%Quality slider applies when the target is JPG, WebP, or AVIF.
Output
Output options for this format are applied automatically during browser conversion. Drop your file above to begin.
Advanced settings
Additional Options
How to Convert XLSX to CSV
Open the XLSX → CSV converter
Open the XLSX to CSV converter on Format Convertly.
Add your XLSX file
Add the spreadsheet in the browser dropzone.
Download CSV
Convert and download CSV (remember CSV is typically one sheet of values).
Why Convert XLSX to CSV?
Private by design
XLSX → CSV runs in your browser. Files are not uploaded to a remote conversion queue.
Ready for the next step
Convert when a site, editor, or teammate expects CSV instead of XLSX.
Preserve detail
CSV: none or container. Typically lossless or lightly transformed for editing and archival use.
Wide compatibility
XLSX is commonly used for Financial models and Operational trackers.
CSV vs XLSX
A quick side-by-side before you convert — deeper comparison lives on the full guide.
| Feature | XLSX | CSV |
|---|---|---|
| Structure | Multiple sheets + objects | One flat table |
| Formulas | Yes | No |
| Formatting | Yes | No |
| Best for | Human analysis in Excel | Data interchange |
| Typical size | Larger | Very compact |
| Encoding pitfalls | Fewer for casual users | Common |
| Database import | Possible but heavier | Excellent |
Choose XLSX when…
- Financial models
- Formatted reports
- Pivot-friendly analysis
- Multi-sheet workbooks
Choose CSV when…
- SaaS exports into pipelines
- Database COPY/import
- Git-friendly data dumps
- Values-only handoffs
What happens during document conversion?
XLSX: XLSX compression: none or container. Lossless (or non-destructive packaging) keeps reconstructable data — size savings come from packing efficiency, not throwing detail away. Typical size profile: Small to large depending on data and embedded images. Quality note: Full spreadsheet fidelity in Excel-compatible apps CSV: CSV compression: none or container. Lossless (or non-destructive packaging) keeps reconstructable data — size savings come from packing efficiency, not throwing detail away. Typical size profile: Very compact versus XLSX for the same rows. Quality note: Lossless for text values; types are inferred by the importer Comma-separated values with a header row — opens in Excel, Sheets and Numbers.
Tip
Formulas become calculated values (or may need a values-only sheet first).
When should I use CSV?
CSV: CSV is the lingua franca for moving tabular data between spreadsheets, databases, and scripts. It carries values—not formatting or formulas—so pair it with XLSX when people need filters, charts, and styled sheets. Best for Exporting SaaS and billing reports and Database import/export.
CSV format guide →When should I keep XLSX?
Keep XLSX when you still need to edit or when it already matches your audience. XLSX is the business default for spreadsheets: multiple sheets, formulas, pivot-friendly data, and formatting. Use CSV when you only need raw values for import, and PDF when you need a non-editable snapshot of a report.
XLSX format guide →XLSX · CSV
Related converters XLSX
Related converters CSV
Frequently Asked Questions
More on quality loss: conversion quality guides · problem-solution guides
Does converting XLSX to CSV reduce quality?
Often no for lossless or remux-style paths. Quality drops when you re-encode with lossy settings, downscale, or flatten features like transparency.
Can you recover quality after converting?
Not from a lossy output alone. Return to the original master (or a better source). Converting to a lossless format does not resurrect discarded detail.
Where can I learn more about conversion quality?
Browse Format Convertly’s Quality guides for topics like whether conversion reduces quality, JPG↔PNG myths, WebP/MP3/MP4 tradeoffs, recovery limits, and generational loss — each links to the right converter.
Why is my Excel to CSV messy?
CSV only stores a plain table — no formulas, formatting, or multiple sheets. Export calculated values from one sheet via Excel → CSV and verify separators. Full guide: Why Is My Excel to CSV Messy?.
Where can I find more problem-solution guides?
Browse the Guides hub for long-tail fixes — HEIC won’t open, PNG too large, PDF not searchable, video too large, WebP upload failures, and more — each links to the right converter or tool.
Are formulas kept?
CSV stores calculated values as text when exported that way — not live Excel formulas.
Is my spreadsheet uploaded?
No. Format Convertly converts locally in the browser.
What is a XLSX file?
XLSX is a Microsoft Excel Open XML workbook for spreadsheets, formulas, and charts. XLSX is the business default for spreadsheets: multiple sheets, formulas, pivot-friendly data, and formatting. Use CSV when you only need raw values for import, and PDF when you need a non-editable snapshot of a report.
Related problems
Ready to Convert Your Files?
XLSX to CSV privately in your browser.