CSV to JSON Converter
Convert CSV (with quoted fields) into JSON, pretty JSON, or transpose rows and columns. In your browser, nothing uploaded.
🔒 Everything runs in your browser. Nothing is uploaded.
Examples
a,b
1,2
3,4 | [{"a":"1","b":"2"},{"a":"3","b":"4"}] | to json |
name,age
"Doe, John",30 | [{"name":"Doe, John","age":"30"}] | to json |
a,b,c
1,2,3 | a,1
b,2
c,3 | transpose |
How it works
Available operations: CSV → JSON (pretty), CSV → JSON (min), Transpose.
Everything runs locally with the same code that passes our automated correctness tests — no server, no upload.