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CSV to JSON Converter

Convert CSV files to JSON format

Files stay on this deviceRuns entirely in your browserFree — no signup

Drop your file here or browse from your device

Accepts CSV, TSV, TXT. Maximum input: 10 MiB. Files above this hard limit are rejected before local processing.

How to Convert

  1. Upload your CSV file
  2. Configure output options
  3. Preview the JSON
  4. Download or copy the JSON

Features

  • Array of objects output
  • Nested object support
  • Pretty-print formatting
  • Minified output option

Use Cases

  • Prepare data for web APIs
  • Convert spreadsheets for JavaScript apps
  • Create JSON fixtures for testing

Frequently Asked Questions

Is CSV to JSON Converter free to use?

Yes. It is free to use with no signup or watermark.

Is my data private when using CSV to JSON Converter?

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

What JSON formats are supported?

You can output as an array of objects (using headers as keys) or as a nested array of arrays.

Related Tools

JSON to CSV Converter

Convert JSON arrays to CSV format

CSV to XML Converter

Convert CSV files to XML format

CSV Viewer

View CSV files in a spreadsheet-style grid with sorting, filtering, and search

Need to convert the other way? Try our Json To Csv