100% Browser-Based • No Upload • Free

Free CSV to JSON Convert Data Instantly

Paste CSV data and get clean, well-structured JSON output in seconds. Handles headers, custom delimiters, and large datasets — all in your browser.

Convert CSV to JSON All Tools
No sign-up required to try • No files uploaded • Free forever

How It Works

1
Select or drop your file
2
Processed in your browser — nothing uploaded
3
Download the result — done!
Key Features

Why Use UniTrack CSV to JSON

Transform spreadsheet data into API-ready JSON format — instantly.

100% Private

Your files never leave your device. Everything is processed locally in your browser.

Instant Processing

No waiting for server uploads. Processing starts immediately using your device's power.

Unlimited & Free

No file limits, no watermarks, no hidden fees. Use as much as you want, forever free.

Your Data Never Leaves Your Browser

Unlike other online tools, we don't upload your files to our servers. Everything is processed using JavaScript directly in your browser. When you close the tab, your data is gone. Zero tracking, zero risk.

0
Server uploads
0
Data stored
0
Tracking
FAQ

Frequently Asked Questions

Yes! The first row is automatically treated as column headers. Each subsequent row becomes a JSON object with keys matching the header names.

Yes. Since processing happens in your browser, there's no upload size limit. Performance depends on your device, but most handle thousands of rows without issues.

Absolutely. All conversion happens in your browser. Your CSV data is never sent to any server — ideal for sensitive business data.

Convert CSV to JSON for Free

Transform spreadsheet data to JSON instantly — no upload, no signup.

Convert Now Browse All Tools
No sign-up required 100% browser-based Free forever