CSV to JSON
Turn CSV files into clean JSON arrays with proper type inference.
Drop a CSV file
delimiter auto-detected (comma, tab, semicolon)
CSV to JSON is the everyday data-prep step before feeding spreadsheet content into a script, an API, or a frontend. Converterzilla's converter handles delimiter detection, type inference and proper encoding so the JSON output drops cleanly into any modern toolchain.
How to use CSV to JSON in your browser
- Upload your CSV. Drop a .csv file or paste content. Delimiters auto-detected.
- Pick output shape. Array of objects (default), array of arrays, or newline-delimited JSON.
- Download JSON. Save a properly-encoded .json file.
Why use Converterzilla for CSV to JSON
Type inference
Numbers stay numbers, booleans stay booleans, the rest stays string — predictable across rows.
Three output shapes
Objects, arrays or NDJSON — pick what your downstream tool expects.
Streaming for big files
Large CSVs (100MB+) stream-process to avoid memory blowups.
Frequently asked questions about CSV to JSON
If a column has both numbers and text, everything stays as string for safety. Override per-column if needed.
Configurable: null, empty string, or skip the property altogether.
Yes — toggle pretty-print before download.