SourceCSV
ResultJSON
The conversion result will appear here
CSV → JSON · Local · No upload
CSV to JSON Converter
CSV → JSON · Detect headers & types · Array or keyed output
No upload, no storage
JSON is processed in memory and never sent to a server.
Share via URL fragment
Share links encode data in the # anchor — never sent to a server.
Remember last edit
Optionally keep your last input locally; clear it with one click.
Why use CSV to JSON
Convert CSV to JSON
Turn CSV into an array of objects to feed back into systems or APIs.
Header Detection
The first row becomes field names, mapping each column to an object key.
Type Inference
Numbers, booleans and empty values are restored to real JSON types.
Array or Keyed Output
Output an array of objects, or a keyed object using the first column.
Runs Locally — No Upload
Conversion runs entirely in your browser; data is never uploaded or stored.