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
JosephDavisjoseph.davis@gmail.com+1 (470) 721-40612827 Elm StSan DiegoUnited States749981993-08-15
JohnMartinezjohn.martinez@example.com+1 (535) 591-32426129 Hill StDallasUnited States135762000-07-12
JamesDavisjames.davis@icloud.com+1 (675) 307-89593317 Main StDallasUnited States213471993-02-21
RichardDavisrichard.davis@icloud.com+1 (960) 747-91775027 Main StSan AntonioUnited States510922005-02-11
JenniferBrownjennifer.brown@outlook.com+1 (915) 620-21383540 Hill StSan DiegoUnited States461722022-12-20
ElizabethJoneselizabeth.jones@icloud.com+1 (962) 601-15469355 Park StDallasUnited States861481997-04-29
RobertRodriguezrobert.rodriguez@gmail.com+1 (687) 402-99694253 Park StSan DiegoUnited States412562000-11-08
BarbaraRodriguezbarbara.rodriguez@protonmail.com+1 (406) 466-61269303 Cedar StPhoenixUnited States964102001-08-16
JamesWilsonjames.wilson@example.com+1 (958) 666-22738046 Maple StPhiladelphiaUnited States187072010-02-11
JamesLopezjames.lopez@gmail.com+1 (579) 920-28846839 Main StSan AntonioUnited States804041982-06-29

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.