Excel to CSV Converter

Convert Excel spreadsheets to CSV format for database imports, data analysis, and cross-platform compatibility.

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Instant Conversion

Upload Your Excel File

CSV Output

Ready for Processing

Your CSV output will appear here after conversion.
Upload an Excel file to get started.

How to Excel to CSV

  1. 1Upload your Excel file (.xlsx or .xls) using the file selector above
  2. 2Click the 'Convert to CSV' button to start the conversion process
  3. 3Wait for the conversion to complete - this usually takes just a few seconds
  4. 4Preview the converted CSV data in the output section
  5. 5Download the CSV file or copy the data to your clipboard
  6. 6Use the CSV file in your preferred application or database

Why Use Excel to CSV?

  • Universal compatibility - CSV files work with virtually any spreadsheet application
  • Smaller file sizes compared to Excel formats for better storage efficiency
  • Perfect for database imports and data migration projects
  • No formatting complexity - pure data structure for clean analysis
  • Platform independence - works on Windows, Mac, Linux, and mobile devices
  • Instant processing with no software installation required

Key Features

  • Supports both .xlsx and .xls file formats
  • Preserves all data integrity during conversion
  • Fast processing - convert files in seconds
  • No file size limitations for reasonable Excel files
  • Secure processing - files never leave your browser
  • Free to use with unlimited conversions
  • Clean CSV output with proper comma separation
  • Instant download and clipboard copy options

Best Practices for Excel to CSV Conversion

  • Ensure your Excel file has consistent data structure across all rows
  • Remove any merged cells before conversion for best results
  • Check that your Excel file doesn't have multiple sheets if you only need specific data
  • Verify date formats are consistent to avoid conversion issues
  • Remove any special formatting or formulas that aren't needed in CSV
  • Test with a small file first if you're converting large datasets
  • Always preview the output before using in production systems
Tool
XLSX to CSV Converter
Category
All Excel tools
Availability
Browser-based tool

Converting XLSX to CSV

Upload an .xlsx or .xls workbook and the first worksheet is converted to CSV in your browser. Cells are written as they are displayed, so formulas become their calculated values and dates keep the format shown in Excel.

Steps

  1. Upload the workbook.
  2. Check the preview of the first sheet.
  3. Download the CSV.

Edge cases

  • Only the first worksheet is converted. Move the sheet you need to the first position in Excel first.
  • If you choose a comma as the decimal separator, the CSV uses semicolons between columns so numbers like 3,5 stay intact.
  • Completely blank rows are dropped; blank cells inside a row are kept as empty values.
  • Leading zeros survive only if Excel displays them (for example a column formatted as text).

Common questions

How do I convert an XLSX or XLS file to CSV?

Upload the workbook, check the preview, and download the CSV. The first worksheet is converted; if you need another sheet, move it to the first position in Excel before converting.

Are formulas kept in the CSV?

No. CSV stores plain values only, so each formula cell is written as its last calculated result. Formatting, colours and charts are also dropped.

My workbook is password protected — what now?

Remove sheet or workbook protection with Excel Password Remover first, then convert.

Excel file too big? Compress it

Built and maintained by the CSV Tools Online team. Files are processed in your browser and never uploaded. Last updated: .