Is my CSV data uploaded to your servers?

No, all conversion happens directly in your browser. Your CSV data never leaves your device, ensuring complete privacy and security.

What CSV formats are supported?

We support standard CSV format with comma delimiter, semicolon-delimited CSV, and tab-delimited files. CSV should have header row for best results. Values with commas should be quoted.

How are CSV rows converted to JSON?

Each CSV row becomes a JSON object. Column names from header row become object keys. Values are preserved as strings unless they're numeric. Empty cells become null or empty strings.

Yes! All processing happens locally in your browser. Your CSV data never leaves your device and is never uploaded to any server.

What's the maximum CSV file size?

Very large CSV files (>10MB) may process slowly. For best performance, convert CSV files under 5MB, or wait for processing to complete.

CSV to JSON - Convert CSV to JSON Free | PureXio

CSV to JSON Converter

Convert CSV data to JSON format

Delimiter:

CSV Input

How to Use CSV to JSON

Paste CSV data into input field or upload CSV file. CSV should have header row (first row contains column names).

Select delimiter (comma, semicolon, tab) if CSV uses non-standard delimiter. Tool detects comma by default.

Click 'Convert' to transform CSV to JSON array. Each CSV row becomes a JSON object with column names as keys. Copy or download JSON result.

Common Use Cases

Convert CSV files exported from Excel or databases to JSON for web applications

Transform CSV data from spreadsheets to JSON format for APIs or data processing

Convert CSV contact lists or data exports to JSON for use in applications

Transform CSV configuration files to JSON format for easier parsing

Convert CSV survey results or data exports to JSON for analysis or visualization

Features

Convert CSV files to JSON array format

Support for custom delimiters (comma, semicolon, tab)

Automatic header row detection

Preserve data types (numbers, strings)

100% free and private - no data uploaded

No registration required

100% client-side processing

Limitations & Constraints

CSV files with inconsistent delimiters or formatting may not convert correctly

Very large CSV files (>10MB) may process slowly depending on browser memory

CSV files with special characters or commas in values need proper quoting

Nested data structures in CSV may not convert to nested JSON correctly

CSV files with different row lengths may produce unexpected JSON structure

Troubleshooting

CSV to JSON conversion fails or shows error

Solution: Check CSV format - ensure consistent delimiter (comma, semicolon, tab). Verify CSV has header row. Check for unclosed quotes or special characters. Ensure CSV is properly formatted.

JSON structure doesn't match expected format

Solution: CSV converts to array of objects (one object per row). Verify CSV has header row for property names. Check delimiter setting matches CSV file. Review CSV structure before conversion.

Special characters or commas in CSV cause issues

Solution: CSV values with commas or special characters should be quoted. Ensure CSV uses proper quoting (double quotes). Check CSV formatting - values with commas need quotes around them.

Conversion is slow with large CSV files

Solution: Very large CSV files may take time. Close other browser tabs to free memory. Consider converting smaller sections, or use CSV processing tools for very large files.

Need different delimiter (semicolon, tab)

Solution: Select correct delimiter from settings (comma, semicolon, tab). Verify CSV file uses the selected delimiter. Check CSV file format - some regions use semicolons instead of commas.