Generate Test Data Online

This tool builds realistic sample data for testing, demos and prototypes. Define your columns and their types, choose how many rows you need, and export as CSV, JSON or SQL inserts.

A seed makes the output reproducible, so the same settings always produce the same dataset, and a new seed gives a fresh one.

Pick from names, emails, usernames, phone numbers, cities, countries, companies, streets, UUIDs, integers and decimals with bounds, booleans, dates, words and sentences, colours, a row number, or a custom pick list.

Export the result as CSV for spreadsheets, JSON for APIs, or SQL with a CREATE TABLE and inserts for seeding a database. Everything is generated on your device.

Every conversion happens locally in your browser, so your data is never uploaded, logged or stored on a server. You can use it on confidential exports without a second thought, and it keeps working offline once the page has loaded.

There is no sign-up, no watermark and no row limit: the only ceiling is your device's memory.