CSV to JSON Converter
Paste CSV with a header row and get a clean JSON array of objects instantly — handles quoted fields.
Convert CSV to JSON instantly
The CSV to JSON converter turns CSV data into a clean JSON array of objects, using the first row as the keys. Paste your CSV and copy the formatted JSON — ideal for feeding spreadsheet data into APIs, JavaScript, config files, and databases. Everything runs in your browser, so your data stays private.
How the conversion works
Each CSV row becomes a JSON object, with the column headers as property names and the cell values as the values. So a CSV with name,age and a row Alice,30 becomes { "name": "Alice", "age": "30" }. The result is an array of these objects — exactly the shape most programs and APIs expect.
How to use it
- Paste your CSV, with column names in the first row.
- The JSON array is generated instantly below.
- Copy it into your code or config.
Quoted fields handled
Real CSV data often contains commas, quotes, and line breaks inside quoted fields. This converter parses those correctly, so a value like "Smith, John" stays in one field instead of being split. That makes it reliable for exports from spreadsheets and databases, not just simple comma lists.
Why convert to JSON?
| JSON is ideal for |
|---|
| Sending data to web APIs |
| Loading into JavaScript / TypeScript |
| Config files and seed data |
| NoSQL databases like MongoDB |
A note on types
Values are kept as strings, which is the safe default since CSV has no type information. If you need numbers or booleans typed, convert them in your code after parsing — that avoids surprises like a ZIP code "01234" losing its leading zero. For most data-loading tasks, string values are exactly what you want.
Private and free
Conversion runs entirely in your browser — nothing is uploaded. The tool is completely free with no sign-up.
Frequently asked questions
Does the first row become the keys?
Yes. The header row's values are used as the JSON object property names.
Does it handle commas inside fields?
Yes. Quoted fields are parsed correctly, so commas and quotes inside values stay together.
Are values typed as numbers?
No, values are kept as strings (safe for things like ZIP codes). Convert types in your code if needed.
Is my data private?
Yes. Everything runs in your browser and nothing is uploaded.