How many rows can I generate?

Up to 10,000 rows per run, generated in your browser with no account. Very large runs may freeze the page briefly while they build.

Which output formats are available?

JSON, CSV, NDJSON and SQL INSERT statements (ANSI or MySQL dialect, with your table name). Copy the result or download it as a file.

What kinds of fields can I create?

IDs, UUIDs, numbers, prices, names, emails, phones, companies, addresses, dates, URLs, IPv4, hex colors, lorem text, booleans and your own list of values. All data is fictional.

Yes. Every tool is free to use, with no account and no credit card. The work runs on your device rather than on our servers, which is what keeps it free to run.

Does it work on mobile?

Yes. It runs in current mobile browsers on iOS and Android, with nothing to install.

🗃️

Free Mock Data Generator

Generate realistic fake test data — names, emails, addresses, dates, numbers — and export as JSON, CSV, SQL, NDJSON, XML, or XLSX. Names, phones, and addresses in 11 languages. Up to 10,000 rows, no account, runs in your browser.

Runs in your browserNo sign-up, no pop-upsNo login requiredFree foreverUp to 10,000 rows

Works offline once loaded

Mockaroo's free plan stops at 1,000 rows per download — here you can generate up to 10,000. · checked Sep 2026

Fields

5 columns

Quick start:

Infer columns from a sample

Paste a CSV with a header row, a JSON object or array, or NDJSON. Column types (email, date, number range, short list of values…) are guessed from the names and values, then you can adjust them.

Rows

Up to 10,000 rows

Data language / region

Seed (optional)

Same seed = same data every time.

Format

JSON shape

💡 All data is randomly generated in your browser — up to 10,000 rows, no account, nothing uploaded. Names, companies, and addresses are fictional and any resemblance to real data is coincidental.

Common uses

Generate Seed Data for a DatabaseCreate realistic rows and export SQL INSERT statements to seed your dev database.
Generate JSON Test Data for an APIBuild realistic JSON payloads for testing endpoints and mock servers.
Generate CSV Test DataCreate a CSV of sample rows to import into Excel, Google Sheets, or a data tool.
Generate Placeholder Data for a UIFill tables, lists, and cards with realistic content while building a UI.
Generate Bulk Data for Load TestingProduce large datasets to stress-test imports, queries, and pipelines.

How It Works

Need realistic-looking test data to seed a database or build a UI? Many generators (like Mockaroo) cap the free tier at around 1,000 rows. This one runs in your browser and makes up to 10,000 rows at a time.

1
You define your schema
Add fields and pick a type for each — names, emails, addresses, dates, numbers, booleans, UUIDs, custom lists, and more.
2
Rows are generated locally
Each row is built from curated, fictional data pools using your browser's random number generator. Nothing is sent to a server.
3
You export in your format
Output as JSON, CSV, SQL INSERT statements (with your table name), or NDJSON.
4
Copy or download
Copy the result to your clipboard or download it as a file, ready to seed a database or feed a test suite.

All data is fabricated and generated entirely on your device — up to 10,000 rows per run, no sign-up, and nothing is uploaded. Perfect for seeding dev databases, prototyping UIs, and load-testing.

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