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Client-side ProcessingUpdated 2026-02-11Report issue

Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.

CSV to JSON Converter

Convert CSV spreadsheet data to JSON arrays.

FreeRuns in browsercsv to jsoncsv json converter
Cmd/Ctrl+Enter Primary actionCmd/Ctrl+Shift+L Load sampleCmd/Ctrl+Shift+X Clear/resetCmd/Ctrl+Shift+C Copy result

About CSV to JSON Converter

Convert CSV spreadsheet data to JSON arrays. Convert CSV to JSON arrays online for free. Parse spreadsheet and comma-separated data into structured JSON objects instantly in your browser. No signup required. Accurately converts complex nested data structures while preserving hierarchy, types, and special characters. Provides clear error messages for malformed input to help you troubleshoot quickly. This tool specializes in converting from CSV to JSON, providing optimized defaults and precision for this specific direction. Looking for the reverse conversion? Try our JSON to CSV converter. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.

Related tools: JSON to CSV Converter, CSV to TSV Converter, JSON to YAML Converter

How to Use CSV to JSON Converter

  1. Paste your source data into the input area.
  2. Select the target format from the available options.
  3. Click Convert and copy the formatted output.

Frequently Asked Questions

What is CSV to JSON Converter?
Convert CSV to JSON arrays online for free. Parse spreadsheet and comma-separated data into structured JSON objects instantly in your browser. No signup required.
Are comments preserved during conversion?
Comment handling depends on the source and target formats. Formats that support comments (like YAML and TOML) will have them parsed, but since most data interchange formats like JSON do not support comments, they may be stripped during conversion.
What happens with invalid input?
The tool validates your input before conversion and displays clear error messages if the data is malformed. This helps you identify and fix syntax issues before attempting the conversion.
Can I convert between nested formats?
Yes, deeply nested and complex data structures are fully supported. The converter preserves the hierarchy, arrays, and key-value pairs from your source format and maps them accurately into the target format.
Is CSV to JSON Converter free to use?
Yes, all format conversions are free and unlimited. No account is required, and the tool works entirely in your browser.
Is my data safe when using CSV to JSON Converter?
Yes, your data stays on your device. The conversion runs entirely in your browser, and no data is uploaded to any server.

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JSON to CSV Converter
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CSV to TSV Converter
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JSON to YAML Converter
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