Every Toolkit

CSV to Excel Converter

Convert CSV files to downloadable Excel (.xlsx) directly in the browser using SheetJS

Need to convert Excel to CSV?

Try our Excel to CSV converter

Upload CSV File

Drag and drop or click to select a CSV file

Drop CSV file here or click to browse

Supports .csv files only

Convert

File Info

File Name:No file
Rows:0
Columns:0
Format:CSV → XLSX

Supported Formats

CSV (.csv)
Excel (.xlsx)

About CSV to Excel Converter

Browser-Based Conversion

Convert CSV files to Excel format directly in your browser using SheetJS (xlsx library). No server upload required - all processing happens locally for maximum privacy and speed.

Features

  • Drag and drop file upload
  • CSV parsing and validation
  • Excel (.xlsx) export
  • Data preview table (first 10 rows)
  • File information display
  • Client-side processing (no server)
  • Instant conversion
  • Download ready Excel file
  • Clear data option
  • Responsive design

How to Use

  1. Drag and drop a CSV file or click to browse
  2. Preview the data in the table
  3. Click "Download Excel" to convert
  4. Your .xlsx file will download automatically
  5. Use "Clear Data" to start over

Technology

  • SheetJS (xlsx): Excel file generation library
  • FileReader API: Browser file reading
  • Client-side: No server upload needed
  • Privacy: Files never leave your browser

Use Cases

  • Convert CSV exports to Excel format
  • Share data in Excel-compatible format
  • Import CSV data into Excel applications
  • Data format conversion
  • Spreadsheet compatibility

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