Developer Tools
CSV to JSON
Parse CSV with quoted fields, selected delimiters and optional header rows.
JavaScript is required to run the interactive tool. Open the tool separately if it does not load in the frame.
How to use it
Paste CSV, choose comma, semicolon or tab, and decide whether the first row is data.
Example
A name,age header and one data row become one JSON object.
Frequently asked question
Are numbers converted automatically?
No. Each CSV cell stays a string so leading zeros are preserved.
Limits and privacy
All records must have the same number of columns. Values remain strings; no type guessing occurs. Input is limited to 2 million characters.
Tool input is processed in a separate browser environment without advertising or analytics scripts. This page does not upload it to the service.