Convert XLSX and XLS spreadsheets to CSV files. Each sheet is exported separately. Runs entirely in your browser.
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Drop an .xlsx or .xls file or browse
Microsoft Excel spreadsheet
Excel to CSV converts XLSX and XLS spreadsheets into comma-separated values (.csv) files. CSV is the universal data interchange format — accepted by every database, data tool, and programming language.
Drop your Excel file. SheetJS reads every sheet and converts the cell data to CSV format. If the workbook has multiple sheets, each is exported as a separate .csv file. Everything runs in your browser — nothing is uploaded.
Upload your Excel file
Drop an XLSX or XLS file onto the upload zone.
Select sheet
If the workbook has multiple sheets, choose which one to export as CSV.
Choose delimiter
Select comma, semicolon, or tab as the column separator in the output CSV.
Convert
Click "Convert to CSV". The sheet data is exported as a plain text CSV file.
Download
Save the .csv file to import into databases, data analysis tools, or other applications.
Database Import
Export Excel data to CSV for direct import into SQL databases, PostgreSQL, or data warehouses.
Script Processing
Convert spreadsheets to CSV so Python, R, or Node.js scripts can read and process the data without Excel dependencies.
API Integration
Produce CSV output from Excel reports to feed into APIs, webhooks, or third-party data platforms.
CRM Uploads
Convert contact or lead Excel spreadsheets to CSV for direct bulk import into Salesforce, HubSpot, or Mailchimp.
Research Sharing
Share research datasets as CSV files so collaborators using any programming language or tool can access the data.
Lightweight Archiving
Export Excel sheets to CSV for a plain-text archive that remains readable without any spreadsheet application.
Per-Sheet Export
Each worksheet is exported as a separate named CSV file, keeping your data logically organized.
Calculated Values Exported
Formula results are written to CSV, not the formula strings, so downstream tools receive clean numeric values.
XLS and XLSX Support
Both the legacy XLS format and the modern XLSX format are supported with the same conversion quality.
RFC 4180 Compliance
Cells containing commas or quotes are automatically wrapped in double quotes following the CSV standard.
Browser-Only Processing
Your spreadsheet data is processed entirely in the browser by SheetJS — nothing is uploaded to any server.
Free to Start — Sign Up for More
Use free with no account for standard file sizes. Sign up free to raise your limit to 80 MB, or upgrade to Pro for 250 MB per file.
Also Known As
Excel to PDF
Convert XLS and XLSX spreadsheets to PDF, keeping all rows and columns.
PDF to Excel
Extract tables from PDFs and convert them to editable Excel spreadsheets.
CSV to Excel
Import a CSV file into a structured Excel XLSX spreadsheet.
Excel to JPG
Capture each sheet of an Excel file as a JPG image.
XLS to XLSX
Upgrade old Excel .xls files to the modern .xlsx format.
ODS to Excel
Convert LibreOffice Calc ODS files to Excel XLSX format.
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