All tools / CSV to JSON

Turn CSV
into JSON.

Paste a table or open a CSV file. Get clean JSON without uploading the source.

Local processing. Values stay as strings by default, so leading zeros are preserved.

CSV input

JSON result

Open CSV First row is header JSON Lines

Paste CSV or choose a local file.

Real CSV parsing

Quoted commas, escaped quotes and line breaks inside quoted fields are handled correctly.

Phone numbers, IDs and ZIP codes remain strings. The converter does not silently strip leading zeros.

Neither the CSV file nor its contents are sent to RWAVE servers.

Paste CSV data or open a .csv file.
Choose the delimiter and whether the first row contains field names.
Select standard JSON or newline-delimited JSON, then copy or download the result.

What happens with duplicate headers?
RWAVE makes them unique by adding _2, _3 and so on, preventing one column from overwriting another.