CSV to JSON Converter (and JSON to CSV) Formula-Safe
Two-way converter powered by Papa Parse. Preserves leading zeros in codes/ZIPs by default, handles quoted commas and newlines, and offers formula-safe CSV export against spreadsheet injection.
Input CSV
Output JSON
ReadyData Table Preview (First 10 Rows)
0 rows| No data converted yet. |
=, +, -, or @ can trigger formula execution in Excel or Google Sheets. The "Formula-Safe" option prefixes such cells with a single quote to prevent code execution.
How to Use CSV to JSON Converter Online for Free
Select Direction
Choose CSV to JSON or JSON to CSV conversion.
Paste Data or Upload File
Paste text directly or click "Upload File" to load .csv, .json, or .txt data.
Configure Settings
Enable "Preserve Leading Zeros" or "Formula-Safe Export" as needed for your dataset.
Convert and Preview
Click Convert to review the interactive 10-row data table preview, copy, or download the result.
Key Features & Capabilities
Bidirectional Two-Way Conversion
Effortlessly switch between CSV to JSON array and JSON array of objects to CSV.
Leading-Zero Preservation
Preserves important leading zeros in Postal ZIP codes, phone numbers, and product IDs.
Formula Injection Defense
Safely escapes cells beginning with =, +, -, or @ when exporting to CSV to protect spreadsheet users.
Interactive 10-Row Table Preview
Inspect converted data in a clean, scrollable tabular preview before downloading.