CSV to JSON Converter
Paste your CSV below to convert it into clean, formatted JSON.
CleanTextly's CSV to JSON Converter turns CSV data into clean, formatted JSON right in your browser. The first row is treated as the header, and every other row becomes one JSON object — quoted fields, commas inside quotes, and escaped double quotes are all handled correctly. Paste a spreadsheet export or a hand-written CSV, and the result updates instantly, with a clear error message if anything is malformed.
Features
Instant Conversion
CSV is parsed and converted to formatted JSON live as you type or paste — there's no button you have to click to see the result.
Handles Quoted & Escaped Values
Correctly parses quoted fields, commas inside quotes, and escaped double quotes ("") within a value.
Clear Error Messages
Malformed CSV shows a clear "Invalid CSV format." message instead of silently producing broken output.
Smart Column Handling
Rows with missing columns get empty string values automatically, and extra columns beyond the header are ignored.
100% Private
Everything runs locally in your browser. Your CSV data is never uploaded, logged, or stored anywhere.
How to Use
- 1
Paste your CSV
Add the CSV data you want to convert into the input box. The first row is treated as the header.
- 2
Check the validation status
A clear error message appears instantly if the CSV is malformed, such as an unterminated quote.
- 3
Review the formatted JSON
Valid CSV is converted into a pretty-printed JSON array of objects automatically as you type.
- 4
Copy or clear
Copy the JSON result with one click, or clear both fields to start over.
Example
Converting a Contact List
Input
name,email,city John,john@example.com,London Alice,alice@example.com,Paris
Output
[
{
"name": "John",
"email": "john@example.com",
"city": "London"
},
{
"name": "Alice",
"email": "alice@example.com",
"city": "Paris"
}
]Common Use Cases
Migrating Spreadsheet Data
Turn a CSV export from Excel or Google Sheets into JSON for use in an app or API.
Preparing Test Fixtures
Quickly convert sample CSV data into JSON objects for testing or prototyping.
Feeding Data into JavaScript Apps
Convert CSV files into ready-to-use JSON arrays for frontend or Node.js projects.
Cleaning Up Exported Reports
Turn CSV reports from analytics tools or databases into structured, readable JSON.
Frequently Asked Questions
Blank lines — including ones with only spaces or tabs — are ignored automatically and never produce empty JSON objects.
Missing values are filled in as empty strings, so every object in the output always has the same set of keys.
Extra columns beyond the header are ignored and don't appear in the output.
Yes. Wrap a value in double quotes to include commas, and use two double quotes ("") inside a quoted field to represent a single literal quote.
You'll see a clear "Invalid CSV format." message — for example, if a quoted field is never closed.
No. Conversion happens entirely in your browser. Your CSV is never sent to a server or stored.