Paste your CSV data or upload a file
Paste comma-separated text into the input box or upload a CSV or text file using the upload area.
Free CSV to JSON Converter
CSV to JSON Converter
Convert CSV into JSON instantly in your browser. Paste CSV text or upload a CSV file and get a clean JSON array of objects in seconds. Fast, free, and private.
First row becomes the JSON property names.
Or upload a CSV or text file
Processed entirely in your browser
Results
Files are processed entirely in your browser and are never uploaded to any server.
How it works
How to Convert CSV to JSON
Everything runs in your browser. No account, no software, no data leaving your device.
Click Convert to JSON
Click the convert button to generate a JSON array of objects from your CSV. The first row becomes the property names.
Review the JSON output
Check the preview to confirm the conversion looks correct.
Copy or download
Copy the JSON to your clipboard or download it as a JSON file for use in APIs, scripts, or databases.
Why use this tool
Why Convert CSV to JSON?
CSV is great for spreadsheets and exports, but many apps, APIs, and scripts expect JSON. Converting CSV to JSON turns your rows into a structured array of objects that JavaScript, databases, and web services can use directly.
Converting CSV to JSON is useful when you need to:
Use data in JavaScript or Node
JSON arrays of objects are native to JavaScript and easy to work with in code.
Send data to APIs
Many REST APIs expect JSON request bodies; converting CSV to JSON prepares your data for upload.
Import into NoSQL databases
Document stores like MongoDB work with JSON documents; CSV to JSON makes imports straightforward.
Build configs or fixtures
Turn spreadsheet exports into JSON for app config, test data, or static site content.
Privacy
Private and Secure Conversion
Your files and pasted data are never uploaded to a server. This CSV to JSON converter runs entirely in your browser using client-side processing.
Data stays on your device
Your data never leaves your browser. No uploads, no cloud storage, no logs.
Nothing stored or sent
No files are stored or transmitted. Conversion happens only in memory.
Fast and private
Conversion is instant and runs locally at full browser speed.
FAQ
Frequently asked questions
CSV stands for comma-separated values. It is a plain text format where each column is separated by a comma. Values that contain commas or quotes are usually wrapped in double quotes.
JSON (JavaScript Object Notation) is a standard text format for structured data. It uses key-value pairs and arrays, and is widely used by APIs, databases, and programming languages.
Many applications, APIs, and databases expect JSON. Converting CSV to JSON lets you use spreadsheet or export data in those systems without manual reformatting.
Yes. The first row of your CSV is treated as the header and becomes the property names (keys) in each JSON object. Each following row becomes one object in the output array.
No. Everything runs locally in your browser. Your file is never sent to a server.
Yes. The CSV to JSON converter is free to use with no signup required.
Yes. The output is standard JSON: an array of objects. You can parse it in JavaScript with JSON.parse(), send it in API requests, or import it into document databases and other tools that accept JSON.