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CSV ⇄ JSON Converter

Convert CSV tables to JSON arrays and back. Choose comma, semicolon, or tab delimiter. Import files, pretty-print JSON, copy or download.

PrivateIn your browserInstantUnlimited
Delimiter
2 rows · 3 columns

How it works

1

Paste or import data

Paste CSV with a header row and data rows, or a JSON array of flat objects. You can also import a .csv or .json file up to 5 MB.

2

Choose direction and delimiter

CSV → JSON turns each row into an object keyed by the header. JSON → CSV builds a header from object keys. Pick comma, semicolon, or tab if your file uses a different separator.

3

Convert and export

Click Convert (counts toward the daily limit). Copy the result or download converted.json or converted.csv. Swap moves the output back to input and flips direction.

Why convert CSV and JSON?

CSV is compact and spreadsheet-friendly; JSON is structured and API-friendly. Developers convert CSV exports into JSON for scripts and APIs, and JSON logs or API responses into CSV for Excel. This tool bridges both formats locally.

Why use this tool

  • CSV to JSON and JSON to CSV
  • Comma, semicolon, and tab delimiters
  • Quoted fields and escaped quotes supported
  • Import .csv or .json files
  • Pretty-print or minify JSON output
  • Unlimited — no daily cap

Questions

What does CSV ⇄ JSON do?

It converts a CSV table into a JSON array of objects, or flattens a JSON array back into CSV with a header row.

What JSON shape is required?

JSON → CSV expects an array of flat objects, like [{"name":"Ada","role":"dev"}]. Nested objects are stringified into a single cell.

Does it handle quoted CSV fields?

Yes. Fields wrapped in double quotes, including commas and newlines inside quotes, are parsed correctly.

Which delimiter should I use?

Comma is standard in English locales. Semicolon is common in European Excel exports. Tab suits TSV files.

Is my data sent to a server?

No. Parsing and conversion run entirely in this tab.

Is there a daily limit?

No. This tool has no daily cap.

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