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CSV to JSON — Free Online, No Upload Needed

Convert CSV to JSON with header detection, delimiter choice and preview.

Data & DevFreeNo uploadOffline-capable

Open the interactive csv to json tool — free, runs in your browser.

About this csv to json

Turn spreadsheet exports into JSON for APIs, JavaScript apps or MongoDB imports. Handles quoted commas, custom delimiters and header rows correctly via proper CSV parsing.

How to use

  1. Upload a CSV or paste its contents.
  2. Set delimiter and header options.
  3. Click Convert and download the JSON.

Common use cases

  • Convert a spreadsheet export into JSON for an API or JavaScript app.
  • Feed CSV data into a MongoDB or Elasticsearch import.
  • Turn a survey export into records for a static site or demo.

Every file is processed locally in your browser. Nothing is uploaded, logged or stored, and there is no account to create.

CSV to JSON FAQ

Does it handle quoted commas?

Yes, via PapaParse with proper CSV parsing.

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