CSV to JSON Converter (or JSON to CSV)

Convert CSV to JSON or JSON to CSV directly in your browser. Upload a file or paste data, configure the conversion, preview the result, then copy or download the converted file. Nothing is uploaded.

Drop a CSV file here or click to browse

CSV, JSON or plain-text data — up to 20 MB.

Conversion Options

Configure how CSV rows are parsed and represented in JSON.

Delimiter Auto-detectComma (,)TabSemicolon (;)Pipe (|)

Auto-detect checks the first part of the file.

First row contains headers Uses the first row as JSON property names. Trim surrounding whitespace Does not alter whitespace inside quoted fields. Skip empty rows Rows containing no values are omitted. Infer JSON value types Converts obvious numbers, true/false and null. Off by default to preserve values such as 00123. Pretty-print JSON Formats output with two-space indentation.

Convert CSV to JSON

Everything runs locally in your browser — files and pasted data are never uploaded. CSV parsing supports quoted fields, escaped quotes and line breaks inside quoted values.