Options
Delimiter
Output format
Toggles
CSV Input
JSON Output
Frequently Asked Questions
About the CSV ↔ JSON Converter
CSV (Comma-Separated Values) and JSON (JavaScript Object Notation) are the two most common formats for tabular data exchange. CSV dominates spreadsheet exports and database dumps; JSON powers REST APIs and NoSQL stores. This tool bridges both worlds instantly in your browser — no server, no sign-up, no data ever leaves your device.
The parser is RFC 4180 compliant — it correctly handles quoted fields containing commas, newlines, and escaped double-quotes. Auto-type detection coerces numeric strings to numbers and true/false to booleans, so your JSON is ready to use without a post-processing step. Choose NDJSON output for streaming pipelines, BigQuery imports, or log ingestion tools that expect one object per line.