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Zadein
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Zadein
ToolsPricing
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All Tools

Data Tools

Free Online Data & CSV Tools

Convert, clean, view, and manipulate CSV, JSON, Excel, and SQL data entirely in your browser. No file uploads to any server.

CSV to JSON

Convert CSV files to JSON arrays.

CSV to SQL

Generate SQL INSERT statements from CSV.

CSV Viewer

View and explore CSV files in a table.

CSV Cleaner

Remove empty rows and clean messy CSV files.

CSV Merger

Combine multiple CSV files into one.

Excel to CSV

Convert XLSX spreadsheets to CSV format.

JSON to CSV

Flatten JSON arrays into CSV tables.

JSON to SQL

Generate SQL from JSON data.

JSON Formatter

Prettify and validate JSON data.

Looking for something else?

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About Zadein Data Tools

Zadein's data tools handle common data conversion and transformation tasks including CSV cleaning, JSON and YAML conversion, SQL generation, and spreadsheet processing. They are designed for analysts, developers, and anyone who works with structured data.

How to use

  1. 1Select the data tool that matches your conversion or transformation need.
  2. 2Upload your file or paste your data into the tool.
  3. 3Download or copy the processed output.

Common use cases

  • Convert a JSON API response to CSV for use in a spreadsheet.
  • Clean and deduplicate a messy CSV export.
  • Generate SQL INSERT statements from a CSV data file.
  • Convert between JSON and YAML for configuration management.

Frequently asked questions

Is my data sent to a server?

Data processing happens in the browser. Your files and data are not uploaded to Zadein servers.

What file formats are supported?

CSV, JSON, YAML, Excel (XLSX), and SQL are supported across the data tools.