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CSV to JSON Converter

Convert CSV (or TSV / pipe-separated) data to JSON. Auto-detects delimiter, RFC 4180 compliant.

Free No signup Client-side Privacy friendly

How to use

  1. 1 Paste your CSV data into the input.
  2. 2 Pick the delimiter (or leave on Auto-detect).
  3. 3 Toggle "First row is header" off if your data has no header.
  4. 4 Copy or download the JSON.

Why use this tool

  • RFC 4180 compliant — handles quoted fields, escaped quotes, embedded newlines.
  • Auto-detects tab, comma, semicolon, pipe delimiters.
  • With header: produces array of objects keyed by column. Without: array of arrays.
  • Pure client-side — your data never leaves your browser.

Frequently asked questions

Does it handle quoted commas inside cells?

Yes — RFC 4180 quoting. A field like "New York, NY" is preserved as a single cell.

What about cells with newlines inside?

Supported if the cell is wrapped in double quotes. The newline becomes part of the cell content.

Will numbers be parsed as numbers?

No — all values are output as strings (CSV has no type info). Convert in post-processing if needed.

Summary

CSV to JSON Converter is a free developer utility by Zerethon Tools. Convert CSV (or TSV / pipe-separated) data to JSON. Auto-detects delimiter, RFC 4180 compliant. Runs entirely in the browser — no signup, no upload.

Category
Developer
Pricing
Free
Privacy
Browser-based
Signup
Not required

Privacy

Your data never leaves your browser unless explicitly stated. CSV to JSON Converter runs entirely client-side — no server upload, no logging, no tracking of your input.

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