Input Format:
Your CSV should have headers in the first row. Each subsequent row becomes a JSON object with header names as keys.
Features:
- Handles quoted fields and escaped quotes
- Auto-detects numbers and booleans
- Converts empty values to null
Privacy: All conversion happens in your browser. Your data never leaves your device.
About CSV to JSON Converter
Paste CSV data and get JSON output instantly. The first row becomes object keys, and each subsequent row becomes a JSON object. Perfect for importing spreadsheet data into APIs.
Spreadsheets export CSV but APIs want JSON. This converter bridges the gap—paste your Excel or Google Sheets export and get clean JSON array ready for your application. Handles quoted fields, commas in values, and automatic type detection.
How to use CSV to JSON Converter
Paste your CSV data (with headers in first row).
The converter processes it automatically.
Review the JSON output.
Copy or download the JSON.
Use in your API or application.
Examples
Basic conversion
Headers become keys, rows become objects:
CSV Input:
name,age,city
Alice,30,New York
Bob,25,Boston
JSON Output:
[
{"name": "Alice", "age": 30, "city": "New York"},
{"name": "Bob", "age": 25, "city": "Boston"}
]Type detection
Numbers and booleans are converted automatically:
CSV: active,count,name
true,42,Test
JSON: {
"active": true, ← boolean, not "true"
"count": 42, ← number, not "42"
"name": "Test" ← string
}Handling special values
Commas and quotes in values are handled:
CSV: name,address
"Smith, John","123 Main St, Apt 4"
JSON: {
"name": "Smith, John",
"address": "123 Main St, Apt 4"
}Features
When to use this
- •Importing spreadsheet data into databases
- •Converting Excel exports for APIs
- •Preparing test data for development
- •Migrating data between systems
- •Creating JSON fixtures from CSVs
- •Bulk uploading records to web apps