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CSV to JSON Converter

Convert CSV rows into a JSON array of objects, keyed by the header row.

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How do you convert CSV to JSON?

Give it a CSV whose first line reads name,email,plan and you get back a JSON array where every object carries those three keys. NMSnabbit parses quoting per RFC 4180, so a comma inside “Acme, Inc.” never splits a row. Values stay strings; leading zeros in ZIP codes and IDs survive untouched. The output is pretty-printed and ready to paste into a fixture file.

How to use the CSV to JSON

  1. 1 Paste CSV with the column names on line one.
  2. 2 Watch each data row become an object keyed by those headers.
  3. 3 Scan the output for quoted cells; embedded commas stay inside their value.
  4. 4 Copy the pretty-printed JSON array.

What you can use it for

  • Importing spreadsheet exports into a JSON-based app or API.
  • Generating seed data for tests from a CSV dataset.
  • Previewing how a CSV maps to structured records.
  • Converting analytics exports for a JavaScript front end.

Frequently asked questions

Which row supplies the keys?
The first non-empty line. Every object in the output uses those header cells as its property names, in the original column order.
Why are numbers output as strings?
Casting is left to you. A phone number, an account ID or a ZIP code with a leading zero would be mangled by automatic numeric conversion, so values pass through as text.
Can a field contain a comma or a line break?
Yes, when it is wrapped in double quotes. A doubled quote inside a quoted field decodes to a single quote character, exactly as RFC 4180 specifies.

Related tools

JSON to CSV Convert a JSON array of objects into a clean CSV table. CSV to TSV Convert comma-separated values to tab-separated values (TSV). JSON Formatter Beautify, validate and minify JSON with clear error messages.

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