Free Online CSV Tools

Convert between CSV, JSON, and text formats instantly in your browser. No upload, no signup, 100% private.

Text to CSV Converter

Convert plain text, tab-separated values, space-separated data, and custom-delimited text into properly formatted CSV files.

Text to CSVTSV to CSVClipboard to CSV

TXT to CSV Converter

Convert .txt files to CSV format. Drag-and-drop or paste tab-separated, space-separated, or custom-delimited text files and get RFC 4180 CSV output.

TXT to CSVText File to CSV.txt to .csv

JSON to CSV Converter

Convert JSON arrays and objects to CSV format. Flatten nested objects with dot notation, handle arrays, and export Excel-compatible CSV.

JSON to CSVFlatten JSONAPI to CSV

CSV to JSON Converter

Convert CSV data to JSON format. Supports array of objects, array of arrays, and minified output. Handles all delimiters.

CSV to JSONTSV to JSONSpreadsheet to JSON

Why use our tools?

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100% Private

All processing happens in your browser. Your data never leaves your device.

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Instant Results

No uploads, no wait times. Convert thousands of rows in milliseconds.

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RFC 4180 Compliant

Standards-compliant output compatible with Excel, Google Sheets, and databases.