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  2. chevron_rightXLSX to CSV

XLSX to CSVConverter — Fast & Free Online

Convert Excel spreadsheets to CSV format for universal data compatibility and easy import into databases.

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1CONVERTER Document Team - 1CONVERTER Team Logo
1CONVERTER Document Team·Document Processing Experts·Updated Mar 15, 2026
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How XLSX to CSV Conversion Works

Converting XLSX to CSV extracts the cell values from a spreadsheet and writes them as plain comma-separated text, making the data importable into any database, analytics tool, or programming environment that reads CSV. XLSX is the XML-based Office Open XML spreadsheet format used by Microsoft Excel, storing cell values, formulas, formatting, charts, and pivot tables in a zipped XML structure. CSV stores only the raw cell values as delimited plain text — one row per line, fields separated by commas (or semicolons in some regional settings). Formulas are evaluated and their computed values are written to the CSV; charts, conditional formatting, and cell styles are discarded. Each worksheet in a multi-sheet workbook can be exported as a separate CSV file. The output encoding is UTF-8 by default, preserving Unicode characters in cell values. 1converter uses LibreOffice Calc in headless mode to evaluate formulas and export the active sheet or all sheets to CSV.

How to Convert XLSX to CSV

Follow these simple steps to convert your XLSX files to CSV format in seconds

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Step 1

Upload your XLSX file

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Step 2

Select CSV as output format

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Step 3

Choose delimiter (comma, semicolon, tab)

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Step 4

Click "Convert"

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Step 5

Download your CSV file

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Average conversion time: Less than 2 minutes

Visual Conversion Preview

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xlsx

Source file

Size:2.4 MB
Format:XLSX
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Converting...

~5s

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csv

Output file

Size:1.2 MB
Saved:-49%
49%
Size Reduction
5s
Processing Time
99%+
Quality Retained

This visualization shows the typical conversion process from XLSX to CSV format, including expected size reduction and quality retention.

Why Convert XLSX to CSV?

Discover the advantages of converting your XLSX files to CSV format

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Universal compatibility

Works with all spreadsheet software

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Database import

Easy import into SQL, MySQL, PostgreSQL

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Smaller file size

Plain text format is lightweight

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Version control friendly

Easy to track changes in Git

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Programming friendly

Simple to parse in any language

Additional Features

243+
Supported Formats
<2 min
Average Time
24/7
Available
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Popular Use Cases

See how professionals use our XLSX to CSV converter in real-world scenarios

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Importing data into databases

Convert XLSX to CSV for this purpose quickly and easily.

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Sharing data across different platforms

Convert XLSX to CSV for this purpose quickly and easily.

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3

Data analysis with Python/R

Convert XLSX to CSV for this purpose quickly and easily.

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4

Version controlling data changes

Convert XLSX to CSV for this purpose quickly and easily.

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5

Simplifying complex spreadsheets

Convert XLSX to CSV for this purpose quickly and easily.

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Trusted by Professionals In

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Frequently Asked Questions

Everything you need to know about converting XLSX to CSV

No, CSV only stores values. Formulas will be converted to their calculated results.
By default, only the first sheet is converted. Pro plans allow selecting which sheet to convert.
No, CSV is plain text. All formatting (colors, fonts, borders) will be lost. Only data and text are preserved.

Still Have Questions?

Our support team is here to help you with any questions about XLSX to CSV conversion.

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Learn More About File Conversion

Helpful guides and tutorials related to XLSX and CSV conversions

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Can't Find Your Conversion?

We support 243+ file formats. Browse our complete list of conversions or start converting now!

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