Tools
CSV to JSON Converter
Paste any CSV with a header row and instantly get a clean JSON array. Choose pretty or minified output, then copy or download — all browser-side.
FreeRFC 4180Pretty & MinifiedNo Upload
CSV Input
JSON Output
JSON output will appear here…What makes a valid CSV for this converter?
- The first row must be the header row — each column name becomes a JSON key.
- Fields that contain commas or double quotes must be wrapped in double quotes (RFC 4180).
- Embedded double quotes are escaped by doubling them:
"". - Empty cells are converted to empty strings in the JSON output.
Common use cases for CSV to JSON conversion
CSV is the universal export format from spreadsheet apps (Excel, Google Sheets, Numbers) and databases. Converting to JSON is useful when you need to feed data into a JavaScript application, a REST API, or a NoSQL database like MongoDB. Many data pipelines also accept JSON but not raw CSV, making this conversion a frequent developer task.
Pretty vs. minified JSON
Pretty JSON (with 2-space indentation) is ideal for readability, debugging, and configuration files. Minified JSON removes all whitespace and produces a compact single-line string — use it for API payloads, localStorage, and anywhere file size matters.