Excel to CSV Converter
Convert Excel spreadsheets (.xlsx, .xls, .xlsm) into clean CSV text files instantly.
Drop Excel file(s) here or click to browse
Convert Microsoft Excel spreadsheets (.xlsx, .xls, .xlsm) into clean CSV text files instantly.
Quick Answer: What does Excel to CSV Converter do?
To convert an Excel spreadsheet (.xlsx / .xls / .xlsm) to CSV, upload your Excel file to ReadyForFile's free online Excel to CSV converter. Select your preferred output delimiter (comma, semicolon, tab, pipe) and worksheet tab, then click 'Download CSV'. All conversions run 100% locally in your browser with zero server uploads.
About Excel to CSV Converter
Convert Microsoft Excel spreadsheets (.xlsx, .xls, .xlsm, .xlsb) into standard CSV (Comma Separated Values) text files online for free. Custom output delimiter support (comma, semicolon, tab, pipe), worksheet tab selection, and batch conversion options. All processing runs 100% locally inside your web browser with zero server uploads.
Features & Capabilities
- Instant browser-based Excel (.xlsx / .xls) to CSV conversion
- Choose output delimiter: Comma (,), Semicolon (;), Tab (\t), or Pipe (|)
- Worksheet tab selector for multi-sheet workbooks
- Batch export: Convert multiple Excel files or export all sheets at once
- 100% private: Zero server data transfers
Common Scenarios & Use Cases
- Preparing Excel spreadsheet data for database import (MySQL, PostgreSQL, MongoDB)
- Converting financial or sales reports from XLSX to CSV format for software integration
- Exporting specific worksheet tabs from complex multi-sheet Excel workbooks
- Converting European format Excel files to semicolon (;) or comma (,) CSV files
How Client-Side Processing Works Behind the Scenes
Unlike traditional cloud utilities, ReadyForFile executes all file processing directly within your device’s browser sandbox:
The browser loads your document into local device RAM via the HTML5 File & FileReader API.
High-performance JavaScript / WebAssembly compiles the output locally without transmitting network packets.
The generated output is packaged into a local blob: URI and saved directly to your filesystem.
How to Use Excel to CSV Converter
Upload Excel Spreadsheet(s)
Drag and drop your .xlsx, .xls, or .xlsm files into the dropzone, or click to select files.
Configure Delimiter & Sheet Options
Select your target CSV delimiter (comma, semicolon, tab, pipe) and choose which worksheet tab to export.
Download CSV File
Click 'Download CSV' to save your converted CSV text file instantly.
Frequently Asked Questions
How do I convert XLS or XLSX to CSV?
Upload your .xlsx or .xls file, select your preferred CSV delimiter (comma, semicolon, tab), and click Download CSV.
Does converting Excel to CSV upload my file to any server?
No. All Excel parsing and CSV generation is performed 100% locally in your browser using client-side JavaScript. Your file data never leaves your computer.
Can I convert multi-sheet Excel workbooks?
Yes! You can select a specific worksheet tab to export, or choose to export all worksheet tabs into separate CSV files.
Can I generate European semicolon-separated (;) CSV files?
Yes! Simply change the CSV Delimiter setting to Semicolon (;) before downloading.
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