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Mock Data Generator

Free online mock data generator. Generate realistic fake test data in JSON format — names, emails, phone numbers, addresses, and more. Customize fields and count, download as JSON.

Tools run in your browser. Shared links may include your input; check the URL before sharing.

How to use

  1. Choose a record count and the fields you need.
  2. Generate data and check field types before using it.

This example illustrates one supported operation. Choose the matching mode and settings above; generated values and formatting may vary.

Example input or settings

fields: id, firstName
count: 1

Example result

[
  { "id": 1, "firstName": "Alice" }
]

What tests is this useful for?

Use it for UI and API integration. Prepare nulls, duplicates and length limits as separate edge cases.