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CSV to JSON Converter

Paste CSV data with a header row, choose a delimiter and convert it into structured JSON locally in the browser.

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Convert CSV tables into JSON locally.

When to use this tool

Use it when you have CSV from a spreadsheet, export or import file and need a JSON version for scripts, APIs or review.

  1. Turn a CSV export into JSON for a script or API payload.
  2. Convert spreadsheet rows into structured JSON before sharing them with a JSON workflow.
  3. Flatten simple browser-side CSV data into a copyable JSON array.
Related tools

Related tools

DataJSON to CSV Converter

Convert JSON arrays into CSV locally.

DataCSV Column Mapper

Map and rename CSV headers locally.

DeveloperJSON Formatter and Validator

Format, minify, validate and sort JSON.

FAQ

Questions

Questions

Does the CSV to JSON converter upload my data?

No. CSV parsing and JSON conversion run locally in your browser.

What CSV shape does it support?

This version expects a header row and at least one data row. Each row becomes a JSON object.

Can I choose the CSV delimiter?

Yes. You can convert CSV with commas, semicolons or tab-separated columns.