Bulk Data Generator

Pro Tool

Generate large datasets with customizable fields. Export to CSV or JSON for database seeding and testing.

Settings

Preview (First 10 records)

Total generated: 10
firstNamelastNameemailphoneaddresscitycountryzipbirthDate
JamesGonzalezjames.gonzalez@example.com+1 (214) 674-85611257 Main StNew YorkUnited States506832016-05-20
RichardBrownrichard.brown@icloud.com+1 (467) 544-5995458 Oak StDallasUnited States896362013-10-26
JohnDavisjohn.davis@gmail.com+1 (765) 973-12831297 Oak StSan DiegoUnited States668771993-12-16
JosephBrownjoseph.brown@gmail.com+1 (965) 999-77683634 Oak StSan JoseUnited States712481983-04-07
DavidLopezdavid.lopez@test.io+1 (257) 335-99072237 Main StChicagoUnited States801652003-09-04
RichardGarciarichard.garcia@outlook.com+1 (650) 961-83199006 High StHoustonUnited States876992020-07-25
JosephSmithjoseph.smith@yahoo.com+1 (827) 839-90528653 Oak StHoustonUnited States163731991-09-03
PatriciaBrownpatricia.brown@yahoo.com+1 (747) 626-30689802 Church StSan AntonioUnited States895401981-11-09
PatriciaDavispatricia.davis@icloud.com+1 (463) 608-76538914 Maple StDallasUnited States262122007-10-27
JenniferWilliamsjennifer.williams@protonmail.com+1 (236) 616-78316605 Oak StDallasUnited States193362009-06-19

What is This Tool?

A bulk data generator creates large volumes of realistic test data in multiple formats including CSV, JSON, SQL, and XML. Configure data schemas with dozens of field types — names, emails, addresses, numbers, dates, custom patterns — and generate thousands of records in seconds.

Realistic test data at scale is critical for performance testing, database migration validation, and ML model training. This generator ensures referential integrity, configurable null rates, and statistical distributions that mirror real-world data patterns.

Common Use Cases

Database Seeding

Generate thousands of test records for PostgreSQL, MySQL, MongoDB, and other databases to test query performance and indexing strategies.

Load & Performance Testing

Create large CSV/JSON datasets for stress testing APIs, ETL pipelines, and data processing workflows under realistic data volumes.

Machine Learning

Generate labeled training data with controlled distributions for prototyping ML models before real data is available.

Data Migration Testing

Create source data that mirrors production schemas for testing database migration scripts, data transformation logic, and ETL processes.

Frequently Asked Questions

How many records can I generate?

The browser-based generator handles thousands of records comfortably. For larger volumes (100K+), consider using the API or downloading in batches.

What output formats are supported?

CSV, JSON, SQL INSERT statements, XML, and TSV. Each format includes proper escaping and encoding for direct import into your target system.

Can I define custom field types?

Yes. Beyond built-in types (name, email, address), you can define custom patterns, regex-based generators, and weighted random selections.