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Dummy Data Generator

LOCAL · Browser-Only

Generate realistic fake data for testing in JSON, CSV, SQL, TSV, or XML format

Quick Presets

Select Fields5 selected

Basic(5)

Name(3)

Contact(2)

Location(7)

Work(4)

Data(9)

Internet(7)

Finance(3)

Personal(4)

Text(2)

Advanced(1)

Rows

Format

Seed (optional)

Blanks (%)

·Share recipe

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What is Dummy Data Generator?

Free online dummy data generator to generate realistic fake user data for testing and development.

Choose from dozens of field types - names, emails, phone numbers, addresses, companies, dates, UUIDs, and more. Set the number of rows, select your output format (JSON or CSV), and download instantly. Perfect for populating databases, testing APIs, creating mockups, and building demo data. All data is generated client-side using deterministic algorithms - no external API calls. No signup required.

How to Use Dummy Data Generator

1Select the fields you want to include (name, email, phone, address, etc.)
2Set the number of rows to generate (1 to 10,000)
3Click Generate to create the data instantly
4Copy the output or download as JSON or CSV

Frequently Asked Questions

What types of data can I generate?

You can generate names (first, last, full), emails, phone numbers, street addresses, cities, states, zip codes, countries, company names, job titles, dates, UUIDs, URLs, IP addresses, credit card numbers (fake), lorem ipsum text, numbers, and booleans.

Is the generated data truly random?

The data is pseudo-random - generated by deterministic algorithms using curated word lists and patterns. Names come from common name databases, emails are derived from generated names, and addresses use realistic but fictional combinations. The data looks realistic but doesn't correspond to real people.

What output formats are supported?

You can export data as formatted JSON (array of objects) or CSV (comma-separated values). Both formats are ready to import into databases, APIs, spreadsheets, or testing frameworks.

How many rows can I generate?

You can generate up to 10,000 rows at once. Since all generation happens in your browser, larger datasets may take a moment on slower devices. For most testing purposes, 100-1000 rows is sufficient.

How do I generate fake data to seed a database?

Pick the fields that match your table columns, set the row count, and export as CSV or JSON. Import the CSV into your database tool or load the JSON through your seed script to populate tables for development.

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Keep reading: JavaScript Cheat Sheet and hash algorithms reference. Doing this in code instead? See the utility endpoints.

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