CSV Tools

🔧 Free Online Tools

All-in-One File Converter

Convert, compress & transform any file instantly — 100% free, no signup, processed in your browser

🔒 100% Private ⚡ Instant Results 🌍 Works Worldwide 📱 All Devices

📊 CSV Converter Tools

Convert CSV files to JSON, Excel and more. Also convert JSON and Excel back to CSV. All processing done in your browser — your data stays private.

CSV to JSON

Convert CSV spreadsheet data to JSON format. Headers become keys automatically

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Drop CSV file or click to browse
CSV files only • Max 5MB
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CSV to Excel

Convert CSV files to Excel (.xlsx) format. Opens directly in Microsoft Excel or Google Sheets

📁
Drop CSV file or click to browse
CSV files only • Max 5MB

JSON to CSV

Convert JSON arrays back to CSV format. Works with any flat JSON array structure

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Drop JSON file or click to browse
JSON files only • Max 5MB
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Excel to CSV

Convert Excel (.xlsx/.xls) files to CSV format. Compatible with all spreadsheet applications

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Drop Excel file or click to browse
XLSX, XLS • Max 5MB
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About CSV Format — Complete Guide

CSV (Comma-Separated Values) is one of the most universal data formats used worldwide. A CSV file stores tabular data — rows and columns — as plain text, where each value is separated by a comma. It was originally developed in the 1970s and remains the standard format for data exchange between different applications and systems.

📋 When to Use CSV?

  • Export data from databases
  • Import contacts into email apps
  • Share spreadsheet data universally
  • Feed data into Python/R for analysis
  • Import products into e-commerce
  • Bank transaction exports

✅ CSV vs Excel vs JSON

  • CSV: Plain text, universally compatible
  • Excel: Formatted, charts, formulas
  • JSON: Nested data, for developers
  • CSV is smallest file size
  • CSV works on all operating systems
  • CSV opens in any text editor
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