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Test Data Generator Tool

Easily generate dummy data for development and testing. Supports 50+ data types from Japanese names, addresses, and My Number to JWT, API keys, and Lorem ipsum. Export as CSV, JSON, or SQL. Free with no registration required.

Field definition
EnabledField nameTypeSettings

Count

Add fields and click Generate.

How to use

About this tool

A tool that makes it easy to generate dummy data for development and testing. Features • 50+ data types - Personal info, business, Web/IT, finance, and more • Full Japanese support - Names, addresses, My Number, Japanese era, etc. • Multiple output formats - CSV, JSON, and SQL INSERT statements • Completely free - No registration or limits

How to use

Add fields via presets or manually, set count, format, and language, then click Generate. Preview and stats are shown; export via Copy or Download. Use ⚙ to adjust name, email, age, date, and amount options.

Options

Output format: JSON, CSV, TSV, SQL INSERT, PHP array, JavaScript array, XML, Laravel Seeder.

Language: Japanese, English, or Random (for names, etc.). Count: 1–10,000. Table name: for SQL/Seeder. Presets: user, customer, product, order, log, employee master.

Supported data types: Personal (name, address, phone, My Number, etc.) / Business (company, department, job title, etc.) / Web & IT (UUID, JWT, API key, IP address, etc.) / Financial (credit card, cryptocurrency, etc.) / Date & time (Japanese era, timestamp, etc.) and more

Use cases

• Creating test data for applications • Seeding databases with initial data • Building UI mockups • Sample data for presentations • DB seeds and Laravel Seeder input • JSON for API mocks and stubs • List and form test data • Bulk data for performance tests • Format and import verification • Dummy data for My Number, JWT, API keys, Japanese era, star rating, progress %, etc.

Privacy and data

All generation is done in the browser; no input or generated data is sent to any server.