CSV to JSON Converter Online

CSV (Comma-Separated Values) is the most common export format for spreadsheets, databases, and data pipelines. Converting CSV to JSON lets you use the data in APIs, JavaScript apps, or NoSQL databases like MongoDB and Firestore.

When to Convert CSV to JSON

- Loading spreadsheet data into a web application or API

- Importing data from Excel or Google Sheets into MongoDB or Firebase

- Feeding CSV exports from analytics tools into a data pipeline

- Preparing seed data for development databases

Example

Input (CSV with headers):

id,name,email,role,active

1,Rohith,rohith@example.com,admin,true

2,Priya,priya@example.com,user,false

3,Arjun,arjun@example.com,user,true

Output (JSON):

[

{ "id": "1", "name": "Rohith", "email": "rohith@example.com", "role": "admin", "active": "true" },

{ "id": "2", "name": "Priya", "email": "priya@example.com", "role": "user", "active": "false" },

{ "id": "3", "name": "Arjun", "email": "arjun@example.com", "role": "user", "active": "true" }

]

CSV Formats Supported

- **Standard CSV** — comma-separated with a header row

- **TSV** — tab-separated values (common in database exports)

- **Quoted fields** — fields with commas inside quotes: `"Smith, John"`

- **No header** — generates `col1, col2, col3...` keys automatically

Tips

- The first row is treated as the header (column names become JSON keys)

- All values are strings by default — use a schema or post-process to cast types

- Empty cells become empty strings `""` in JSON

Paste your CSV directly into DevConvert and select JSON as the output format.