Data Tools
Free Online Data Tools
Toolza provides free online data conversion tools. Convert between CSV and JSON formats instantly in your browser — ideal for developers, data analysts, and anyone working with structured data.
All 1 Data Tools
What You Can Do
Common tasks you can accomplish with Toolza data tools.
CSV to JSON
Convert CSV spreadsheets to JSON format for APIs, databases, and web applications. Also converts JSON back to CSV.
Frequently Asked Questions
Standard comma-separated values with configurable delimiters, quote characters, and header row detection.
No hard limit. Processing happens in your browser, so performance depends on your device memory for very large files.