CSV to JSON Converter

Convert CSV spreadsheets, TSV, or Excel exports into clean, formatted JSON arrays or nested objects.

Delimiter:

Indent:

First row is header

Parse nested keys (e.g. user.address.city)

Auto parse numbers & booleans

CSV Input

JSON Output

What is CSV to JSON Converter?

CSV (Comma-Separated Values) is a ubiquitous format for exporting tables from Microsoft Excel, Google Sheets, databases, and reporting systems. JSON is the primary interchange format for modern REST APIs, NoSQL databases, and web development. This free online converter transforms tabular CSV rows into clean, structured JSON documents entirely inside your browser with complete data privacy.

How to Convert CSV to JSON Online

Paste your CSV text or tabular spreadsheet data into the left box.
Choose your delimiter (Auto-Detect, Comma, Semicolon, Tab, or Pipe) and output indentation.
Configure parsing options: use the first line as headers, unflatten dot notation keys, or auto-convert numbers and booleans.
Inspect the generated JSON and table preview, then click 'Download .json' or 'Copy' to use the result.