Convert Excel & CSV Files
into Clean JSON or SQL
Transform spreadsheet tables from XLSX, XLS, and CSV files directly into formatted JSON arrays or database SQL INSERT statements with 100% browser-side privacy.
Upload Spreadsheet File
Select or drop your spreadsheet. Supported formats include .xlsx, .xls, and .csv.
Drop your Excel or CSV file here
or click to browse from device (Press '/' to open)
Convert Excel and CSV Spreadsheets into Structured JSON or SQL
RMtoolshub provides an instant, private utility for developers, database administrators, and data analysts to convert raw spreadsheet files into clean data interchange formats without installing desktop software.
Convert Excel to JSON Array
Convert every spreadsheet row into a key-value JSON object mapped directly to your column headers. Ideal for APIs, web apps, and NoSQL databases.
Generate SQL INSERT Statements
Export data directly as valid MySQL, PostgreSQL, or SQLite queries with automatically escaped strings, numbers, and sanitized table names.
Private & Offline in Browser
Powered by SheetJS and WebAssembly. No files are transferred across the web, making it compliant for sensitive customer or financial data.
Frequently Asked Questions (FAQ)
How do I convert an XLSX or CSV file to JSON online?
Simply drag your .xlsx or .csv file into the upload box. The tool reads your sheet headers and contents locally. Under Conversion Settings, pick whether you need minified or formatted (pretty) JSON, and click 'Generate Output' to copy or download the file.
Can I generate SQL INSERT queries for MySQL or PostgreSQL from Excel?
Yes. Select the SQL tab, enter your target database table name (e.g., customers or orders), and click Generate. Values with special characters and single quotes are escaped so you can directly run the script in your SQL client.
Is my spreadsheet data secure and confidential?
Yes. Unlike other cloud converter tools, RMtoolshub operates 100% inside your web browser. Neither your file nor its parsed rows are ever sent to an external server or stored in any database.
What happens if my spreadsheet has empty rows or duplicate headers?
Our parser automatically detects and removes blank rows, while duplicate headers are sanitized into unique column names (e.g., column_1, column_2) to ensure valid JSON and SQL syntax.