CSV to JSON Converter
Convert CSV data into a structured JSON array — paste comma-separated rows and get formatted JSON instantly. Free, client-side CSV to JSON converter.
🔒 100% Client-Side Processing
Your data is processed entirely in your browser and never transmitted to any server.
0 / 100M Limit
Common Use Cases
Importing spreadsheets into apps
Convert an Excel or Google Sheets export into the JSON array your API, fixture file, or NoSQL import expects.
Seeding development databases
Turn tabular test data maintained in a spreadsheet into JSON documents for MongoDB, Firestore, or mock servers.
Prototyping with real data
Convert a CSV report into JSON to feed charts, tables, and frontend components during development.
Frequently Asked Questions
- How does the converter map CSV to JSON?
- The first row is read as headers; every following row becomes one JSON object with those headers as keys. The result is a formatted JSON array ready for APIs, fixtures, or NoSQL imports.
- What are the limits of this CSV parser?
- It splits on plain commas, so quoted fields containing embedded commas or line breaks are not handled — the common case of simple exports works perfectly. For gnarly quoted CSV, pre-clean the data or use a full parser library. Need to shrink the resulting JSON afterward? Try our JSON Minifier.
- I need to go the other way, JSON to CSV — where do I do that?
- Use the JSON to CSV Converter — paste a JSON array of objects and get spreadsheet-ready CSV rows back.
- Is my data private when I use this tool?
- Yes. This tool runs entirely in your browser using client-side JavaScript — nothing you type is transmitted to, logged by, or stored on any server. You can safely process confidential text, tokens, or code.